# PostCSS Color Hex Alpha [PostCSS Logo][postcss] [npm version][npm-url] [CSS Standard Status][css-url] [Build Status][cli-url] [Discord][discord] [PostCSS Color Hex Alpha] lets you use 4 & 8 character hex color notation in CSS, following the [CSS Color Module] specification. ```pcss body { background: #9d9c; } /* becomes */ body { background: rgba(153,221,153,0.8); } ``` ## Usage Add [PostCSS Color Hex Alpha] to your project: ```bash npm install postcss postcss-color-hex-alpha --save-dev ``` Use it as a [PostCSS] plugin: ```js const postcss = require('postcss'); const postcssColorHexAlpha = require('postcss-color-hex-alpha'); postcss([ postcssColorHexAlpha(/* pluginOptions */) ]).process(YOUR_CSS /*, processOptions */); ``` [PostCSS Color Hex Alpha] runs in all Node environments, with special instructions for: | [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Create React App](INSTALL.md#create-react-app) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) | | --- | --- | --- | --- | --- | --- | ## Options ### preserve The `preserve` option determines whether the original notation is preserved. By default, it is not preserved. ```js postcssColorHexAlpha({ preserve: true }) ``` ```pcss body { background: #9d9c; } /* becomes */ body { background: rgba(153,221,153,0.8); background: #9d9c; } ``` [cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test [css-url]: https://cssdb.org/#hexadecimal-alpha-notation [discord]: https://discord.gg/bUadyRwkJS [npm-url]: https://www.npmjs.com/package/postcss-color-hex-alpha [Gulp PostCSS]: https://github.com/postcss/gulp-postcss [Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss [PostCSS]: https://github.com/postcss/postcss [PostCSS Loader]: https://github.com/postcss/postcss-loader [PostCSS Color Hex Alpha]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-color-hex-alpha [CSS Color Module]: https://www.w3.org/TR/css-color-4/#hex-notation