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15 lines
483 B
JavaScript
15 lines
483 B
JavaScript
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/* IMPORT */
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import _ from '../utils/index.js';
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import luminance from './luminance.js';
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/* MAIN */
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const contrast = (color1, color2) => {
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const luminance1 = luminance(color1);
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const luminance2 = luminance(color2);
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const max = Math.max(luminance1, luminance2);
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const min = Math.min(luminance1, luminance2);
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const ratio = (max + Number.EPSILON) / (min + Number.EPSILON);
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return _.lang.round(_.lang.clamp(ratio, 1, 10));
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};
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/* EXPORT */
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export default contrast;
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