postcss-colour-functions

PostCSS plugin for Sass-like colour functions.

..

Install

npm install postcss-colour-functions --save

Then just require it in whatever task runner you prefer like so:

var colourFunctions = require('postcss-colour-functions');

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Colour Functions

The plugin expects colours to be entered in either RGB/A or hexidecimal format. No HSL is usable as yet. It does also accept some basic CSS colour codes, but the list is by no means exhaustive.

darken

Darkens a colour by a specific amount, specified either as a decimal or percentage:

/* so this */
.element{
    color: darken(#00b, 20%); // you could also use '0.2' instead of '20%'
}
    
/* becomes this */
.element{
    color: rgb(0,0,150);
}

lighten

The same as darken, except it tints the colour as opposed to shading it:

/* so this */
.element{
    color: lighten(#00b, 20%); // you could also use '0.2' instead of '20%'
}
    
/* becomes this */
.element{
    color: rgb(51,51,201);
}

opacity

Specify an opacity for a given colour. This returns an rgba value:

/* so this */
.element{
    color: opacity(#00b, 20%); // you could also use '0.2' instead of '20%'
}
 
/* becomes this */
.element{
    color: rgba(0,0,187,0.2);
}

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License

MIT

If you have any improvements I'm super keen to pull them in.