Did I correctly implement the math for converting from CIE L*a*b* to sRGB (or other RGB colorspaces) in this shader?

[Elle (Elle Stone)]

@Tynach - you might try the colour-science python code to check accuracy of your code. Example commands are found scattered through this thread:

What are the LCh and JCh values for the sRGB blue primary?

This question arose in an email discussion in which there was some question as to the actual “sRGB blue” LCh and JCh values. Here are ArgyllCMS xicclu (xicclu) adapted and unadapted LCh values for the sRGB blue primary (that is, (0,0,255), (0.0, 0.0, 1.0), etc, depending on the bit depth)): relative (adapted to D50): $ xicclu -ir -pL sRGB.icm L=29.57 C=131.21 h=301.36 absolute (unadapted): $ xicclu -ia -pL sRGB.icm L=32.30 C=148.44 h=301.62 The above adapted values are also what you ge…