Animated Gradient Generator

Build looping CSS backgrounds with an animated gradient generator

This animated gradient generator lets you design smooth, infinitely looping CSS keyframe gradient backgrounds visually, then export production-ready code in a single click. Pick two or more colors, set the angle, dial in the duration and easing, and watch the animation move in real time — no manual keyframe math required.

Under the hood, the tool uses the standard background-position technique: it paints a larger-than-container linear-gradient and slides it across the element. Animating background-position avoids layout and repaint work, which is the secret to a silky 60fps result on modern browsers.

What you can control

• Colors and stops — add, remove, and reorder color stops to design the gradient palette.
• Angle — rotate the gradient from 0° to 360° to change motion direction.
• Duration — set how long one full loop takes, from snappy 3-second cycles to slow 30-second ambient backgrounds.
• Easing — choose linear, ease, ease-in-out, or a custom cubic-bezier() curve.
• Background size — control how far the gradient travels per loop (200%, 300%, 400%).

How the generated code works

Every export pairs a background: linear-gradient(...) declaration with an oversized background-size and an animation rule tied to a named @keyframes block. A typical result looks like:

.hero {
  background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
  background-size: 400% 400%;
  animation: gradient 15s ease infinite;
}
@keyframes gradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

The full @keyframes at-rule syntax is documented on MDN, and the animation shorthand follows the W3C CSS Animations Level 1 specification.

Pair it with other color tools

Need a starting palette? Generate one with the gradient generator for static gradients, then bring the colors here to animate them. For trendier multi-blob looks, the mesh gradient generator produces blurry, modern UI backdrops. If your animated background sits behind text, run the foreground/background combos through the contrast checker to keep things accessible, and use the color harmony generator to pick stops that flow naturally.

Performance and accessibility tips

1. Keep durations long (10s+) — fast loops feel jittery and can trigger motion sensitivity.
2. Respect prefers-reduced-motion by wrapping the animation in a media query.
3. Limit to 3–5 color stops; more stops increase paint cost without much visual gain.
4. Test on mobile — animated backgrounds can drain battery on lower-end devices.

With those guardrails in place, an animated gradient generator is one of the fastest ways to add motion and polish to a landing page, hero section, or auth screen.