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rchanou/get-hue-from-hash.js

Created March 30, 2017 07:11
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Get Hue From Hash
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get-hue-from-hash.js
export const getHueFromHash = hash => {
let hue = 0;
for (var i in hash) {
hue += Math.pow(hash.charCodeAt(i), 2);
}
return hue % 360;
};
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rchanou commented Apr 1, 2017 •
edited
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This is a pure function which generates an arbitrary but consistent value between 0-360 for a given string. I'm sure it could be improved to be more "evenly distributed".

This is useful for dynamically generating good-looking color schemes, which is one of the cool things you can do with the HSL(A) color format. For example, a list of items can be colored by ID this way. If they have different hues, but the same saturation and lightness, they will generally look pretty good together.

It's also ripe for optimization via memoization.

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