English: Spectrum of visible light, rendered in sRGB, so that the relative luminances are respected. The CIE 2° color matching functions were taken from http://cvrl.ioo.ucl.ac.uk/, and the conversion from XYZ to sRGB from http://www.srgb.com/basicsofsrgb.htm. I normalized values so that the red component of 602 nm was 255 (the maximum), Colors which in sRGB would have been too bright because they are made by two primaries (namely, yellow and cyan) had to be dimmed and were thus somewhat desaturated, due to the way sRGB works.