toHex method

@override String toHex()

Implementation

@override
String toHex() {
  final _h = h / 360;
  final _s = s / 100;
  final _l = l / 100;
  var _r, _g, _b;
  if (_s == 0) {
    _r = _g = _b = _l; // achromatic
  } else {
    Function hue2rgb = (double p, double q, double t) {
      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;
    };
    var _q = _l < 0.5 ? _l * (1 + _s) : _l + _s - _l * _s;
    var _p = 2 * _l - _q;
    _r = hue2rgb(_p, _q, _h + 1 / 3);
    _g = hue2rgb(_p, _q, _h);
    _b = hue2rgb(_p, _q, _h - 1 / 3);
  }
  Function toHex = (double x) {
    var hex = (x * 255).round().toRadixString(16);
    return hex.length == 1 ? '0' + hex : hex;
  };
  return "#" + toHex(_r) + toHex(_g) + toHex(_b);
}