Function hue2rgb

packages/core/src/utils/color.ts:46–53

(p: number, q: number, t: number)

    r = g = b = l; // achromatic
  } else {
    const hue2rgb = (p: number, q: number, t: number) => {
      if (t < 0) t += 1;
      if (t > 1) t -= 1;
      if (t < 1 / 6) return p + (q - p) * 6 * t;
      if (t < 1 / 2) return q;
      if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
      return p;
    };

    const q = l < 0.5 ? l * (1 + s) : l + s - l * s;
    const p = 2 * l - q;