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8
app/javascript/shared/helpers/ColorHelper.js
Normal file
8
app/javascript/shared/helpers/ColorHelper.js
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@@ -0,0 +1,8 @@
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export const getContrastingTextColor = bgColor => {
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const color = bgColor.replace('#', '');
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const r = parseInt(color.slice(0, 2), 16);
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const g = parseInt(color.slice(2, 4), 16);
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const b = parseInt(color.slice(4, 6), 16);
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// http://stackoverflow.com/a/3943023/112731
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return r * 0.299 + g * 0.587 + b * 0.114 > 186 ? '#000000' : '#FFFFFF';
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};
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