rgba-of

Simple alpha channel modifier using template literals syntax.

Install

$ npm install rgba-of --save

Usage

rgba

import rgba from "rgba-of";

const color1 = rgba`#102030,0.3`; // => "rgba(16,32,48,0.3)"
const color2 = rgba`#102030,40%`; // => "rgba(16,32,48,0.4)"
const color3 = rgba`red,.4`; // => "rgba(255,0,0,0.4)"
const color4 = rgba`${'red'},.4`; // => "rgba(255,0,0,0.4)"

// or define custom colors
import {rgbaOf} from "rgba-of";

const rgba2 = rgbaOf({
    "primary": "red",
    "secondary": "#00ff00",
});

const color5 = rgba2`primary,0.2`; // => "rgba(255,0,0,0.2)"
const color6 = rgba2`secondary,25%`; // => "rgba(0,255,0,0.25)"
const color7 = rgba2`${'secondary'},25%`; // => "rgba(0,255,0,0.25)"

// add or subtract alpha
const color8 = rgba`red,-10%`; // => "rgba(255,0,0,0.9)"
const color9 = rgba`rgba(255,255,255,0.5),+0.1`; // => "rgba(255,255,255,0.6)"

darken

import {darken} from "rgba-of";

const color1 = darken`rgba(255,128,64,1),0.5`; // => rgba(128,64,32,1)

TODO

rgba`red`(0.5) // => rgba(255,0,0,0.5)

lighten`red` // lighter 0.1 step

~~interpolate`red,blue,0.2`~~
~~interpolate`red,yellow,green,blue,purple,0.2`~~