postcss-split-color-vars v0.1.0

postcss-split-color-vars

PostCSS plugin to destructure colors in custom properties.

Use the AtRule @split-colors in the selector you want to define the custom properties in.

:root {
  @split-colors {
    --color-primary: rgb(14, 14, 14);
    --color-foo: rgb(128 0 0 / 80%);
  }
}

:root {
  --color-primary-r: 14;
  --color-primary-g: 14;
  --color-primary-b: 14;
  --color-primary: rgb(var(--color-primary-r), var(--color-primary-g), var(--color-primary-b));
  --color-foo-r: 128;
  --color-foo-g: 0;
  --color-foo-b: 0;
  --color-foo-A: 80%;
  --color-foo: rgba(var(--color-foo-r), var(--color-foo-g), var(--color-foo-b), var(--color-foo-A));
}

Currently the color functions rgb(), rgba(), hsl(), hsla(), lch(), lab(), hwb and hex color (with 3, 4, 6 or 8 digits) are supported. Color functions are supported with both comma-separated syntax (like rgba(14, 14, 14, 1)) and space-separated syntax (like hsla(120% 100% 50% / 60%)) with optional alpha channel. rgb() and hsl() will be transformed to rgba() or hsla() respectively if alpha transparency is used.

Usage

Step 1: Install plugin:

npm install --save-dev postcss postcss-split-color-vars

Step 2: Check your project for existing PostCSS config: postcss.config.js in the project root, "postcss" section in package.json or postcss in bundle config.

If you do not use PostCSS, add it according to official docs and set this plugin in settings.

Step 3: Add the plugin to plugins list:

module.exports = {
  plugins: [
+   require('postcss-split-color-vars'),
    require('autoprefixer')
  ]
}