Colour picker: RGB -> LCH conversion
Environment/Versions
- GIMP version: 2.10.54
- Package: from gimp.org
- Operating System: Win10
When using the Colour Picker, the RGB & LCH values do not correspond according to my calculations.
The ColorMath Online Colour converter & Converting Colours Converter agree with me, give or take some minor rounding errors. The process I use in my calculations is sRGB -> XYZ -> LAB -> LCh using D65 white point.
I'm a beginner in this area so I can well believe I've misunderstood something, but thought I'd better report it.
Reproduction
Is the bug reproducible? < The values are reproducable for a particular colour, but the degree of variance will depend on the colour selected.
Reproduction steps:
- Load Colour Picker & enter ##0009be or RGB(0,9,190)
- Note LCH values.
Expected result:LCH (23.4, 105.1, 305.7)
Actual result:LCH (21.3, 102.9, 300.7)