Duotone Shift
A copy-paste animated gradients component in pure HTML & CSS. Zero dependencies, framework-agnostic, MIT-licensed.
Animated GradientsHTMLCSSany framework
Copy into your project
HTML
<!-- Duotone Shift -->
<div class="nuda-gradient-duotone" role="img" aria-label="Shifting duotone tile"></div>CSS
.nuda-gradient-duotone {
width: 140px;
height: 140px;
border-radius: 14px;
background: linear-gradient(135deg,#09090b 0%,#e4ff54 100%);
background-size: 100% 100%;
animation: nuda-gradient-duotone-shift 5s ease-in-out infinite alternate;
}
@keyframes nuda-gradient-duotone-shift {
0% {
filter: hue-rotate(0deg) contrast(1);
}
100% {
filter: hue-rotate(160deg) contrast(1.3);
}
}
@media (prefers-reduced-motion:reduce) {
.nuda-gradient-duotone {
animation: none;
}
}
How to use Duotone Shift
Paste the HTML where you need it and the CSS into a global stylesheet (or a <style> tag). Every class is prefixed nuda- so it never collides with Tailwind or your own styles. Tweak the CSS custom properties to match your design system.
Works in React, Vue, Svelte, Astro, Next.js, Nuxt, Laravel Blade, Django, Rails — or a single .html file. No npm install, no build step.