is-dark-color
v1.2.0
Published
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
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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:
Installation
npm i -S is-dark-color
Usage
es6 snippet
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:
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