CSS Gradient Animation Generator

The CSS gradient animation generator produces a complete keyframes-plus-class snippet for a drifting three-colour animated gradient background, with the running animation previewed above the code.

What is CSS Gradient Animation Generator?

The CSS gradient animation generator is a two-part page: a panel with a live animated gradient, and a card holding the entire snippet that produces it. Copying that card gives you a @keyframes shift rule and a .animated-bg class, ready to paste into a stylesheet. There are no inputs — the colours, angle, duration and easing are fixed — so the preview and the code are guaranteed to match, which is the point of showing them side by side.

• The class declares a three-stop linear gradient at 270 degrees, running blue through purple to red, and then sets background-size to 600 percent in both directions.
• At that size the gradient is far larger than the element it paints, so only a slice of it is visible at any moment.
• The keyframes then animate background-position from 0 percent to 100 percent and back, sliding the visible window across the oversized gradient.
• That is what produces the sense of colours drifting past rather than the element changing colour.
• Nothing in the snippet changes colour: the same three stops slide across the element, which is why the effect reads as movement rather than as a state change.

Using it is a two-step job: copy the block and paste it into a stylesheet, then add the class name to whichever element should carry the effect. Because the animation lives in a class rather than an inline style, any element that receives animated-bg inherits the whole effect, which makes it easy to give a hero banner, a card header or a loading placeholder a css animated background without duplicating declarations.

• If the animation should carry your own brand colours, this page will not accept them.
• The gradient, angle, duration and easing are all fixed in the emitted snippet, so any variation starts with an edit to the copied CSS.
• The workable route is to generate the static gradient you want and reuse only the background-size and keyframes from this snippet around it.
• The timing is a deliberately slow drift at 12 seconds, ease, infinite; shortening it reads as motion rather than ambience, and stretching it much further reads as static.

Where it belongs is behind content that is allowed to be decorative: hero sections, empty states, marketing panels. It is a poor choice directly behind body text, and worth avoiding in any interface that needs to hold attention on a task. Continuous animation also costs paint work, so the larger the element, the more it shows up in performance profiles.

Finally, the snippet carries no accessibility guard. The CSS is a gradient animation, so it is exactly the kind of motion a prefers-reduced-motion query exists for, and you should wrap the animation property in a media query that disables it for people who ask for reduced motion. With that addition — and a decision about whether the drifting gradient suits the surface — this is the fastest way to get animated gradient css into a page, complete with the gradient animation css keyframes that make it move.

How to use CSS Gradient Animation Generator

1. Copy the CSS block from the card under the preview.
2. Paste it into a stylesheet — it brings both the @keyframes rule and the .animated-bg class.
3. Add the class to the element that should carry the animated background.
4. Wrap the animation property in a prefers-reduced-motion query if the effect is decorative.

When to use CSS Gradient Animation Generator vs related tools

Use this when you want a ready-made drifting gradient and are happy with its fixed palette and timing. Use the linear or radial gradient generators when you need your own colours and will add the animation yourself. Where the drift has to exist without CSS animation — an email header, a slide background, a static mock — the CSS gradient to image exporter writes a gradient of your own out as a PNG, and a hand-edited version of the snippet's background value can be checked in the gradient previewer before it goes back into the keyframes.

Privacy & Security

This tool runs entirely in your browser — no data ever leaves your device. There is no server round-trip, no upload, no logging, and no account required. Your input is processed locally using client-side JavaScript and is never stored, transmitted, or accessible to anyone else. When you close the tab, everything disappears.

Frequently asked questions about CSS Gradient Animation Generator