Just some color conversion stuff

Color.js

const HEX = /#([0-9ABCDEF]{2})([0-9ABCDEF]{2})([0-9ABCDEF]{2})/;
const VEC3 = /vec3\s?\(([0-9.]*),\s?([0-9.]*),\s?([0-9.]*)\)/;
const DEFAULT_VALUE = 0;

class Color {
  static hex2vec3(hex) {
    let matches = Color.parseHex(hex);
    return Color.vec3(matches, 256);
  }

  static hex2rgb(hex) {
    let matches = Color.parseHex(hex);
    return Color.rgb(matches);
  }

  static vec32rgb(vec3) {
    let matches = Color.parseVec3(vec3);
    return Color.rgb(matches, 256);
  }

  static parseHex(string) {
    let matches = HEX.exec(string);
    if (matches[1] && matches[2] && matches[3]) {
      return [
        parseInt(matches[1], 16),
        parseInt(matches[2], 16),
        parseInt(matches[3], 16)
      ];
    } else {
      return [DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE];
    }
  }

  static parseVec3(string) {
    let matches = VEC3.exec(string);
    if (matches[1] && matches[2] && matches[3]) {
      return [
        parseFloat(matches[1], 10),
        parseFloat(matches[2], 10),
        parseFloat(matches[3], 10)
      ];
    } else {
      return [DEFAULT_VALUE, DEFAULT_VALUE, DEFAULT_VALUE];
    }
  }

  static vec3(m, divisor = 1) {
    return `vec3(${m[0] / divisor}, ${m[1] / divisor}, ${m[2] / divisor})`;
  }
  static rgb(m, scalar = 1) {
    return `rgb(${Math.abs(m[0] * scalar)}, ${Math.abs(
      m[1] * scalar
    )}, ${Math.abs(m[2] * scalar)})`;
  }
}