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Mathematics

The following are the formulae used in the conversion algorithms. For succinctness, consider primary values normalized ∈ [0, 1] (and hue ∈ [0, 360]) unless stated otherwise.

Normalizing RGB​

to achieve R,G,B ∈ [0, 1]

X′=X2 bit depth−1 X=X′⋅2 bit depth−1X' = \frac{X}{2^{\:bit\: depth} - 1} \\ \: \\ X = X' \cdot 2^{\:bit\: depth} - 1