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hsnaydd/calculating-color-contrast.js

Created August 17, 2015 11:46
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Calculating Color Contrast
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calculating-color-contrast.js
/**
* Resource
* https://24ways.org/2010/calculating-color-contrast
*/
function getContrastYIQ(hexcolor){
var r = parseInt(hexcolor.substr(0,2),16);
var g = parseInt(hexcolor.substr(2,2),16);
var b = parseInt(hexcolor.substr(4,2),16);
var yiq = ((r*299)+(g*587)+(b*114))/1000;
return (yiq >= 128) ? 'black' : 'white';
}
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