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Added 2 Aug 2026Updated 4 Aug 2026
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ocean-theme-toggle-5867
Ocean Theme Toggle
Toggles & Switches

Ocean Theme Toggle

Two-position light/dark switch with an ocean thumb that springs between the sun and moon.

Toggles & Switchestogglethemedark-modesegmentedspringocean
lines of CSS
67lines of CSS
dependencies
0dependencies
browser, for years
Everybrowser, for years
stops under reduced motion
Guardedstops under reduced motion
Backdrop
Open a live copy in

Vue, Svelte, styled-components and Tailwind exports are part of Pro. HTML, CSS and React are free forever.

ocean-theme-toggle-5867.css
.fx-mtg-theme-ocean-5866 {
  position: relative;
  display: flex;
  gap: 0.15rem;
  padding: 0.22rem;
  border-radius: 999px;
  background: #0b1120;
  border: 1px solid rgba(255,255,255,0.1);
  cursor: pointer;
}
.fx-mtg-theme-ocean-5866 .thumb {
  position: absolute;
  top: 0.22rem;
  left: 0.22rem;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(140deg, #0ea5e9, #6366f1);
  box-shadow: 0 3px 10px rgba(14,165,233, 0.5);
  animation: fx-mtg-theme-ocean-5866-slide 4s cubic-bezier(0.34, 1.56, 0.64, 1) infinite;
}
.fx-mtg-theme-ocean-5866 span {
  position: relative;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
}
.fx-mtg-theme-ocean-5866 .sun {
  --dot: #0b1120;
}
.fx-mtg-theme-ocean-5866 .sun::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f8fafc;
  box-shadow: 0 0 0 2px rgba(248,250,252,0.25);
}
.fx-mtg-theme-ocean-5866 .moon::before {
  content: '';
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #94a3b8;
  box-shadow: inset -4px -2px 0 0 #0b1120;
}
@keyframes fx-mtg-theme-ocean-5866-slide {
  0%, 42%   { transform: translateX(0); }
  50%, 92%  { transform: translateX(31px); }
  100%      { transform: translateX(0); }
}

@media (prefers-reduced-motion: reduce) {
  .fx-mtg-theme-ocean-5866,
  .fx-mtg-theme-ocean-5866::before,
  .fx-mtg-theme-ocean-5866::after,
  .fx-mtg-theme-ocean-5866 *,
  .fx-mtg-theme-ocean-5866 *::before,
  .fx-mtg-theme-ocean-5866 *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0ms !important;
    transition-duration: 1ms !important;
    transition-delay: 0ms !important;
  }
}
ocean-theme-toggle-5867.html
<div class="fx-mtg-theme-ocean-5866">
  <i class="thumb"></i>
  <span class="sun"></span>
  <span class="moon"></span>
</div>

What do I do with this?

  1. Put ocean-theme-toggle-5867.css anywhere your page already loads CSS from — in Next.js that is app/globals.css, or any stylesheet with a <link> in your HTML.
  2. Then put the class on the element you want it on: <button class="fx-mtg-theme-ocean-5866">. The CSS does nothing until a class name in it matches something on the page.
  • Link the stylesheet, then paste the markup wherever you need it.
npx hoverlab add ocean-theme-toggle-5867

What's included

  • The markup and the stylesheet, in whichever framework you pick
  • No runtime dependencies

Works with

  • React
  • Vue
  • Svelte
  • Tailwind
  • styled-components
  • Plain CSS

npx hoverlab add ocean-theme-toggle-5867

Or over MCP, from your editor's agent — no account needed.

License

Free to read, copy and install, for personal and non-commercial projects. Shipping it in client work or a paid product needs Pro ($79 once). The source lands in your repo and stops being ours — no attribution, nothing to upgrade.

Was this useful?

Motion safety

Static estimate, read from the CSS

Reduced motion
Guarded

Ships a prefers-reduced-motion block, so the loop settles into its end state for visitors who ask for less motion.

What it animates
Compositor only

Only transform, opacity or filter: the GPU can run it without re-laying-out or repainting the page.

Flashing (WCAG 2.3.1)
No flashing found

No repeating change in opacity, colour or brightness large enough to count as a flash.

Layout shift (CLS)
No shift expected

Nothing it animates moves or resizes the box in flow. A category from the CSS, not a measurement for this effect.

Every row is read from the shipped CSS. Only a figure marked measured came from a browser. Customizing the speed changes the timing, so recheck a customized copy. How it is computed

29 more effects in Toggles & Switches

All of them free to read, copy and install — no account, no locked tiles, no watermarked preview. The whole catalog is open, and so are the API and the CLI.

Browse Toggles & Switches

Shipping one commercially

Copying the code is free. Putting it in client work or a paid product is what Pro is for — the licence, not the access.

  • A commercial licence for everything in the catalog
  • Unlimited bundle exports, in Vue, Svelte and Tailwind
  • One payment — no subscription, nothing to renew
Pro — $79 once

7 variations of Ocean Theme Toggle

Finished looks, each one a position in the customizer above. Copy any of them, or open it and keep moving the sliders.