code: public static void xyzToSrgb( float x , float y , float z , float srgb[] ) {
  		srgb[0] = 3.240479f*x - 1.53715f*y - 0.498535f*z;
  		srgb[1] = -0.969256f*x + 1.875991f*y + 0.041556f*z;
  		srgb[2] = 0.055648f*x - 0.204043f*y + 1.057311f*z;
  	}
docs: Conversion from normalized RGB into XYZ.  Normalized RGB values have a range of 0:1