@kcuf/mere-color/dist/esm/a11y/a11y-luminance.js

Mere color utils for generating, manipulation, a11y purposes.

import { rgbComputeLuminance } from '../util';
import { parseToRgb } from '../parse';

/**
 * Get the luminance of a color.
 */
export default function a11yLuminance(color) {
  var rgb = parseToRgb(color);
  return rgb ? rgbComputeLuminance(rgb) : -1;
}
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