color-id  
Convert color channels to single integer and back. Useful to get an id for a color.
``
js
const colorId = require('color-id');
colorId([.1, .5, .5, .1]); // 0x197f7f19
`
colorId(channels, normalized=true)
Get id for normalized to 0..1 rgb[a] channel values. Optionally pass normalized flag to indicate that values are normalized to 0..1 range, defaults to true
.
colorId.from(number, normalized=true)
Get color channels values from the color id. Optionally pass normalized flag to align values to 0..1` range.
Related
>
color-interpolate — interpolate color over palette, colormap or gradient.
>
color-rgba — convert color string to rgba array.
>
color-alpha — change alpha channel for a color.