is-dark-color

Detects if a hex color is dark or light. It is based on the w3 documentation for color luminance: https://www.w3.org/TR/WCAG20/#relativeluminancedef.

Useful when trying to make the text color visible on certain background colors.
This is why I needed this: !this is why I needed this

Installation

npm i -S is-dark-color

Usage

> es6 snippet

``javascript
import isDarkColor from 'is-dark-color'

// obvious
const whiteIsDark = isDarkColor('#ffffff') // false
const blackIsDark = isDarkColor('#000000') // true

const someColor = '#ff9900' // some sort of orange
console.log(isDarkColor(someColor)) // try it to find out
`

Optionally, you can override the return value for certain colors:
`javascript
import isDarkColor from 'is-dark-color'

const options = {
override: {
'#319FB5': true,
'#383939': false,
}
}

isDarkColor('#319FB5') // false
isDarkColor('#319FB5', options) // true
``

Credits

Inspired from
- https://stackoverflow.com/a/3943023/491075
- https://stackoverflow.com/a/5624139/491075
- https://www.w3.org/TR/WCAG20/#relativeluminancedef

LICENCE

MIT