ryancat

/**
 * Compare color difference in RGB
 * @param {Array} rgb1 First RGB color in array
 * @param {Array} rgb2 Second RGB color in array
 */
export function deltaRgb (rgb1, rgb2) {
  const [ r1, g1, b1 ] = rgb1,
        [ r2, g2, b2 ] = rgb2,
        drp2 = Math.pow(r1 - r2, 2),
        dgp2 = Math.pow(g1 - g2, 2),