relative-luminance


relative-luminance

npm install relative-luminance

Calculate the relative luminance of
an RGB triplet color.

Note that as of 1.0.0, this module doesn't directly export a function if you're using
CommonJS: use the default export, like:

``js
var luminance = require('relative-luminance').default;
`

$3

##### Table of Contents

- relativeLuminance
- Parameters
- Examples

#### relativeLuminance

Given a 3-element array of R, G, B varying from 0 to 255, return the luminance
as a number from 0 to 1.

##### Parameters

- rgb Array<number> 3-element array of a color

##### Examples

`javascript
var luminance = require('relative-luminance');
var black_lum = luminance([0, 0, 0]); // 0
``

Returns number luminance, between 0 and 1