darktable color picker - bug or feature?

Hi all,

I am presently experimenting with different color temperatures, and I just discovered this peculiarity.

Here is the image, just opened in darktable 3.0.0rc1+28:

image

These are the RGB values according to the color picker:

rgb

… and the corresponding Lab values:

Lab

Why values outside of RGB 0 – 255 [R has a value of -191 for the green swatch, for instance]? Is there something that I have missed?

Have fun!
Claes in Lund, Sweden

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Definitely a bug. Colour looks consistent though, so I suspect some very basic profiling mistake. What is your histogram profile ?

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Salut & merci!

sRBG (web safe).

Cordialement,
Claes en Lund, La Suède