npm install @csstools/postcss-hwb-function --save-devPostCSS HWB Function lets you use the hwb() color function in CSS, following CSS Color Module 4.
a {
color: hwb(194 0% 0%);
}
b {
color: hwb(194 0% 0% / .5);
}
/* becomes */
a {
color: rgb(0, 196, 255);
}
b {
color: rgba(0, 196, 255, 0.5);
}Add PostCSS HWB Function to your project:
npm install postcss @csstools/postcss-hwb-function --save-devUse it as a PostCSS plugin:
const postcss = require('postcss');
const postcssHWBFunction = require('@csstools/postcss-hwb-function');
postcss([
postcssHWBFunction(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);PostCSS HWB Function runs in all Node environments, with special instructions for:
The preserve option determines whether the original notation
is preserved. By default, it is not preserved.
postcssHWBFunction({ preserve: true })a {
color: hwb(194 0% 0%);
}
b {
color: hwb(194 0% 0% / .5);
}
/* becomes */
a {
color: rgb(0, 196, 255);
color: hwb(194 0% 0%);
}
b {
color: rgba(0, 196, 255, 0.5);
color: hwb(194 0% 0% / .5);
}