xy2hsv static method
Converts xy coordinates in the CIE 1931 color space to HSV.
Returns a list of doubles representing the HSV values. h, s, v
Implementation
static List<double> xy2hsv(double x, double y) {
final List<int> rgb = xy2rgb(x, y);
return rgb2hsv(rgb[0], rgb[1], rgb[2]);
}