22 Tailwind Dropdown Menus
15 / 22

All 22 in 22 Tailwind Dropdown Menus

  1. 01Tailwind Slide-Down Fade Dropdown Menu
  2. 02Tailwind Clip-Path Curtain Reveal Dropdown
  3. 03Tailwind 3D Perspective Flip Dropdown
  4. 04Tailwind Elastic Bounce Dropdown Menu
  5. 05Tailwind Glassmorphism Float Panel Dropdown
  6. 06Tailwind Stagger Children Reveal Dropdown
  7. 07Tailwind Mega Menu Grid Dropdown
  8. 08Tailwind Underline Nav Fade Panel Dropdown
  9. 09Tailwind Details Summary Native Dropdown
  10. 10Tailwind Checkbox Hack Mobile Nav Dropdown
  11. 11Tailwind Nested Multi-Level Dropdown
  12. 12Tailwind Icon Sidebar Flyout Dropdown
  13. 13Tailwind Split-Screen Mega Menu Dropdown
  14. 14Tailwind Segmented Pill Nav Dropdown
  15. 15Tailwind Color Swatch Picker Dropdown
  16. 16Tailwind Right-Click Context Menu Dropdown
  17. 17Tailwind Keyboard Accessible ARIA Dropdown
  18. 18Tailwind Stagger Blur Entrance Dropdown
  19. 19Tailwind Command Palette Search Dropdown
  20. 20Tailwind Autocomplete Suggestion Dropdown
  21. 21Tailwind Tab Panel Dropdown
  22. 22Tailwind Custom Animated Select Dropdown
Pure TailwindMIT licensed

Tailwind Color Swatch Picker Dropdown

An 18-swatch palette in a dropdown, each swatch scaling up on hover with a pure-CSS tooltip. Two things are worth the port: the swatch colours are inline custom properties (eighteen one-off hex values are not a design scale), and the tooltip is after:content-[attr(data-name)] — an attr() read, in a utility.

Live Demo
Plain CSSTailwind v4
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The code

<section class="tdd-15 w-full min-h-svh grid place-items-center bg-linear-[135deg,var(--color-tdd15-bg1),var(--color-tdd15-bg2)] font-tdd15-sans text-tdd15-ink px-5 py-10" aria-label="Colour swatch picker dropdown demo">
  <div class="flex flex-col items-center gap-6">
    <div class="group relative z-10 after:absolute after:inset-x-0 after:top-full after:h-2.5 after:content-['']">
      <button type="button" style="--current:#6366f1" class="flex min-h-11 cursor-pointer items-center gap-2 rounded-[10px] border border-tdd15-edge bg-white px-4 py-2.5 font-tdd15-sans text-sm font-medium text-tdd15-ink shadow-[0_1px_4px_oklch(0_0_0/0.05)] transition-[box-shadow,border-color] duration-150 group-hover:border-tdd15-ring group-hover:shadow-[0_4px_16px_oklch(0_0_0/0.1)] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-acc">
        <span class="size-4.5 shrink-0 rounded-full border-2 border-white/80 bg-[var(--current)] shadow-[0_0_0_1px_oklch(0_0_0/0.12)]" aria-hidden="true"></span>
        <span>Color</span>
        <span class="text-[11px] text-tdd15-mut transition-transform duration-200 group-hover:rotate-180 group-focus-within:rotate-180" aria-hidden="true">&#9662;</span>
      </button>
      <div class="pointer-events-none absolute top-[calc(100%+10px)] left-1/2 w-55 -translate-x-1/2 -translate-y-1.5 rounded-2xl border border-tdd15-edge bg-white p-3.5 opacity-0 shadow-[0_12px_40px_oklch(0_0_0/0.12)] transition-[opacity,translate] duration-280 ease-tdd15 group-hover:pointer-events-auto group-hover:translate-y-0 group-hover:opacity-100 group-focus-within:pointer-events-auto group-focus-within:translate-y-0 group-focus-within:opacity-100 motion-reduce:duration-150">
        <p class="mb-2.5 text-[11px] font-semibold uppercase tracking-[0.08em] text-tdd15-mut">Choose a Color</p>
        <div class="grid grid-cols-6 gap-1.5">
          <button type="button" data-name="Red" style="--sw:#ef4444" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Orange" style="--sw:#f97316" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Amber" style="--sw:#f59e0b" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Yellow" style="--sw:#eab308" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Lime" style="--sw:#84cc16" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Green" style="--sw:#22c55e" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Emerald" style="--sw:#10b981" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Teal" style="--sw:#14b8a6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Cyan" style="--sw:#06b6d4" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Sky" style="--sw:#0ea5e9" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Blue" style="--sw:#3b82f6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Indigo" style="--sw:#6366f1" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Violet" style="--sw:#8b5cf6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Purple" style="--sw:#a855f7" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Fuchsia" style="--sw:#d946ef" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Pink" style="--sw:#ec4899" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Rose" style="--sw:#f43f5e" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Slate" style="--sw:#64748b" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
        </div>
      </div>
    </div>
    <p class="text-[12.5px] italic text-tdd15-mut">Hover or tab the button to pick a palette colour</p>
  </div>
</section>
@import "tailwindcss";

@theme {
  --color-tdd15-bg1: #fafafa;
  --color-tdd15-bg1: oklch(0.98 0 0);
  --color-tdd15-bg2: #f4f4f5;
  --color-tdd15-bg2: oklch(0.96 0.002 285);
  --color-tdd15-ink: #0f172a;
  --color-tdd15-ink: oklch(0.21 0.04 265);
  --color-tdd15-mut: #64748b;
  --color-tdd15-mut: oklch(0.55 0.03 255);
  --color-tdd15-edge: #e2e8f0;
  --color-tdd15-edge: oklch(0.92 0.01 255);
  --color-tdd15-ring: #c7d2fe;
  --color-tdd15-ring: oklch(0.86 0.06 275);
  --color-tdd15-acc: #6366f1;
  --color-tdd15-acc: oklch(0.59 0.2 278);
  --font-tdd15-sans: 'Inter', system-ui, sans-serif;
  --ease-tdd15: cubic-bezier(0.16, 1, 0.3, 1);
}

.tdd-15 {
  width: 100%;
  min-height: 100svh;
}

.tdd-15 ::selection {
  background: var(--color-tdd15-acc);
  color: #fff;
}

Setup — do this once per project

Skip this if your project already runs Tailwind v4.

1Load Tailwind
<script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>

Compiles in the browser — perfect for a CodePen or a quick test, not for production.

2Add the stylesheetRequiredthe @theme block is what makes the custom utilities exist
@import "tailwindcss";

@theme {
  --color-tdd15-bg1: #fafafa;
  --color-tdd15-bg1: oklch(0.98 0 0);
  --color-tdd15-bg2: #f4f4f5;
  --color-tdd15-bg2: oklch(0.96 0.002 285);
  --color-tdd15-ink: #0f172a;
  --color-tdd15-ink: oklch(0.21 0.04 265);
  --color-tdd15-mut: #64748b;
  --color-tdd15-mut: oklch(0.55 0.03 255);
  --color-tdd15-edge: #e2e8f0;
  --color-tdd15-edge: oklch(0.92 0.01 255);
  --color-tdd15-ring: #c7d2fe;
  --color-tdd15-ring: oklch(0.86 0.06 275);
  --color-tdd15-acc: #6366f1;
  --color-tdd15-acc: oklch(0.59 0.2 278);
  --font-tdd15-sans: 'Inter', system-ui, sans-serif;
  --ease-tdd15: cubic-bezier(0.16, 1, 0.3, 1);
}

.tdd-15 {
  width: 100%;
  min-height: 100svh;
}

.tdd-15 ::selection {
  background: var(--color-tdd15-acc);
  color: #fff;
}
3Fonts used by this demooptional — skip if you have your own type stack
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap">

What changed in the port

Which parts became utilities, which stayed CSS, and why.

  • after:content-[attr(data-name)] is the demo's headline: a data-driven tooltip that stays entirely in the class list.
  • Eighteen inline --sw values instead of eighteen @theme colours — the clearest example in the collection of what should NOT become a token.
  • The swatches became <button>s with focus styling, turning an unreachable div grid into a real control.
  • hover:z-20 next to hover:scale-[1.22] keeps cause and effect adjacent; in CSS the z-index fix lived in a different rule from the scale that required it.
Paste this into ChatGPT, Claude, Cursor, or any coding assistant. The block below is pre-framed with everything the AI needs to integrate this demo into your project — markup, styles, scoping notes, and the source URL. Hit Copy and paste straight into your chat.
Here's a working CSS demo from CodeFronts. Use it as-is or adapt to your framework. All classes are scoped under a unique prefix so the code won't collide with your existing styles. MIT licensed.
Demo: Tailwind Color Swatch Picker Dropdown
Source: https://codefronts.com/navigation/tailwind-dropdown-menus/tailwind-color-swatch-picker-dropdown/

An 18-swatch palette in a dropdown, each swatch scaling up on hover with a pure-CSS tooltip. Two things are worth the port: the swatch colours are inline custom properties (eighteen one-off hex values are not a design scale), and the tooltip is after:content-[attr(data-name)] — an attr() read, in a utility.
## HTML
```html
<section class="tdd-15 w-full min-h-svh grid place-items-center bg-linear-[135deg,var(--color-tdd15-bg1),var(--color-tdd15-bg2)] font-tdd15-sans text-tdd15-ink px-5 py-10" aria-label="Colour swatch picker dropdown demo">
  <div class="flex flex-col items-center gap-6">
    <div class="group relative z-10 after:absolute after:inset-x-0 after:top-full after:h-2.5 after:content-['']">
      <button type="button" style="--current:#6366f1" class="flex min-h-11 cursor-pointer items-center gap-2 rounded-[10px] border border-tdd15-edge bg-white px-4 py-2.5 font-tdd15-sans text-sm font-medium text-tdd15-ink shadow-[0_1px_4px_oklch(0_0_0/0.05)] transition-[box-shadow,border-color] duration-150 group-hover:border-tdd15-ring group-hover:shadow-[0_4px_16px_oklch(0_0_0/0.1)] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-acc">
        <span class="size-4.5 shrink-0 rounded-full border-2 border-white/80 bg-[var(--current)] shadow-[0_0_0_1px_oklch(0_0_0/0.12)]" aria-hidden="true"></span>
        <span>Color</span>
        <span class="text-[11px] text-tdd15-mut transition-transform duration-200 group-hover:rotate-180 group-focus-within:rotate-180" aria-hidden="true">&#9662;</span>
      </button>
      <div class="pointer-events-none absolute top-[calc(100%+10px)] left-1/2 w-55 -translate-x-1/2 -translate-y-1.5 rounded-2xl border border-tdd15-edge bg-white p-3.5 opacity-0 shadow-[0_12px_40px_oklch(0_0_0/0.12)] transition-[opacity,translate] duration-280 ease-tdd15 group-hover:pointer-events-auto group-hover:translate-y-0 group-hover:opacity-100 group-focus-within:pointer-events-auto group-focus-within:translate-y-0 group-focus-within:opacity-100 motion-reduce:duration-150">
        <p class="mb-2.5 text-[11px] font-semibold uppercase tracking-[0.08em] text-tdd15-mut">Choose a Color</p>
        <div class="grid grid-cols-6 gap-1.5">
          <button type="button" data-name="Red" style="--sw:#ef4444" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Orange" style="--sw:#f97316" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Amber" style="--sw:#f59e0b" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Yellow" style="--sw:#eab308" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Lime" style="--sw:#84cc16" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Green" style="--sw:#22c55e" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Emerald" style="--sw:#10b981" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Teal" style="--sw:#14b8a6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Cyan" style="--sw:#06b6d4" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Sky" style="--sw:#0ea5e9" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Blue" style="--sw:#3b82f6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Indigo" style="--sw:#6366f1" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Violet" style="--sw:#8b5cf6" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Purple" style="--sw:#a855f7" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Fuchsia" style="--sw:#d946ef" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Pink" style="--sw:#ec4899" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Rose" style="--sw:#f43f5e" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
          <button type="button" data-name="Slate" style="--sw:#64748b" class="relative size-6.5 cursor-pointer rounded-md border-0 bg-[var(--sw)] shadow-[0_1px_3px_oklch(0_0_0/0.15)] transition-[scale,box-shadow] duration-150 after:pointer-events-none after:absolute after:bottom-[calc(100%+6px)] after:left-1/2 after:-translate-x-1/2 after:rounded-[5px] after:bg-tdd15-ink after:px-1.5 after:py-0.5 after:text-[10px] after:font-medium after:whitespace-nowrap after:text-white after:opacity-0 after:transition-opacity after:delay-100 after:duration-150 after:content-[attr(data-name)] hover:z-20 hover:scale-[1.22] hover:after:opacity-100 focus-visible:z-20 focus-visible:scale-[1.22] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-tdd15-ink focus-visible:after:opacity-100"></button>
        </div>
      </div>
    </div>
    <p class="text-[12.5px] italic text-tdd15-mut">Hover or tab the button to pick a palette colour</p>
  </div>
</section>
```
## CSS
```css
@import "tailwindcss";

@theme {
  --color-tdd15-bg1: #fafafa;
  --color-tdd15-bg1: oklch(0.98 0 0);
  --color-tdd15-bg2: #f4f4f5;
  --color-tdd15-bg2: oklch(0.96 0.002 285);
  --color-tdd15-ink: #0f172a;
  --color-tdd15-ink: oklch(0.21 0.04 265);
  --color-tdd15-mut: #64748b;
  --color-tdd15-mut: oklch(0.55 0.03 255);
  --color-tdd15-edge: #e2e8f0;
  --color-tdd15-edge: oklch(0.92 0.01 255);
  --color-tdd15-ring: #c7d2fe;
  --color-tdd15-ring: oklch(0.86 0.06 275);
  --color-tdd15-acc: #6366f1;
  --color-tdd15-acc: oklch(0.59 0.2 278);
  --font-tdd15-sans: 'Inter', system-ui, sans-serif;
  --ease-tdd15: cubic-bezier(0.16, 1, 0.3, 1);
}

.tdd-15 {
  width: 100%;
  min-height: 100svh;
}

.tdd-15 ::selection {
  background: var(--color-tdd15-acc);
  color: #fff;
}
```

How this works

The tooltip is the swatch. after:content-[attr(data-name)] pulls the label straight off the element's attribute, so eighteen tooltips cost eighteen attributes and zero extra nodes:

<button data-name="Indigo" style="--sw:#6366f1"
  class="bg-[var(--sw)] after:content-[attr(data-name)]">

Scale needs stacking. A swatch at 1.22 overlaps its neighbours, so it also takes hover:z-20 — otherwise it grows underneath the next one in source order.

The swatches are buttons, not divs: a colour picker is a control, and the CSS version's <div> grid is unreachable by keyboard. Focus gets the same scale and tooltip as hover.

Make it yours

  • Palette size: grid-cols-6 → grid-cols-8 and the swatches reflow with no other change.
  • Selected ring: add aria-pressed and style it with aria-pressed:ring-2 aria-pressed:ring-offset-2.
  • Grouping: a heading row with col-span-full between families.
  • Tooltip placement: it is bottom-[calc(100%+6px)]; flip to top-full for the bottom row if the panel is near a screen edge.

Gotchas — read before shipping

  • attr() only works for content in stable CSS — you cannot read a colour out of an attribute into background. That is why the colour is a custom property.
  • The tooltip must be pointer-events-none, or moving toward it cancels the hover on the swatch beneath.
  • Scaling inside a grid can shift neighbours unless the cells are fixed-size; the swatches carry an explicit size-6.5.
  • Eighteen theme tokens for eighteen swatches would pollute the utility namespace for no gain — inline properties are correct here.

Browser support

ChromeSafariFirefoxEdge
111+16.4+128+111+

attr() for content and CSS Grid are universally supported; attr() with a type argument is not, and is not used.

Techniques used in this demo

Utilitiesfirst-class utility or variant

gridtw ↗pseudo elementstw ↗transitionstw ↗

Theme tokensset in @theme, used by a utility

custom propertiestw ↗

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