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
```
Get id for normalized to 0..1 rgba channel values. Optionally pass normalized flag to indicate that values are normalized to 0..1 range, defaults to
Get color channels values from the color id. Optionally pass normalized flag to align values to

colorId(channels, normalized=true)
Get id for normalized to 0..1 rgba 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.