CSS Color Generator

Generate CSS custom properties and color snippets from any color.

About the CSS Color Generator

Generate CSS custom properties and color snippets from any color. Every value is computed locally with vanilla JavaScript — there is no server round-trip, no sign-up and no limit on how many times you use it.

How to use

Step 1

Choose a color

Enter a HEX value or pick one visually.

Step 2

Generate variables

CSS custom properties are produced automatically.

Step 3

Review the snippet

See the color expressed as HEX, RGB and HSL variables.

Step 4

Copy the code

Paste the :root block straight into your stylesheet.

Benefits

Drop-in variables

Get a ready-made :root block for your design tokens.

Multiple formats

HEX, RGB and HSL variables from one color.

Cleaner stylesheets

Reference one variable instead of repeating values.

Features & supported formats

Features

CSS custom property output
HEX, RGB and HSL variants
Copy-ready :root snippet
Live color preview
One-tap copy

Supported formats

CSS variablesHEXRGBHSL

Accuracy & limitations

The custom properties generated here are valid CSS you can paste directly, but they are a starting point for a design system rather than the system itself.

The generated custom properties are valid CSS and work in all current browsers. Very old browsers without custom-property support need a static fallback.
HSL values in the snippet are rounded for readability, so they may render a fraction differently from the source HEX.
The variables are a starting point, not a design system. Naming, theming and dark-mode variants are decisions you still need to make.
No contrast checking is applied to the values produced.

Frequently asked questions

What is a CSS variable?

A custom property such as --brand: #3b82f6 that you reference with var(--brand) anywhere in your stylesheet.

Why store colors as variables?

Variables let you change a color in one place and update it everywhere, which is ideal for theming.

Can I use the RGB variable for opacity?

Yes. Storing channels as numbers lets you write rgb(var(--color-rgb) / 50%) for transparency.

Where do I paste the snippet?

Into a :root block near the top of your CSS so the variables are globally available.

Do CSS variables work everywhere?

They are supported in all modern browsers; only very old browsers need a fallback.