Base color does not match User Color

[derricknau]

Hi!

I've got an issue where I have a fill layer with the base color channel set to a value (HSV: 0.138, 0.414, 0.900).  I have an added user channel (User3) with the same HSV values plugged in.  However, the User channel is significantly darker, and I don't understand why.

The color settings for the channels are the same, I do not have an active color profile, and I don't understand why there is a difference. 

See attached image for reference.

I am running Substance Painter 2019.2.2

Any ideas?

[Jeremie Noguer]

This likely happen because user channels are interpreted in linear space by default while the base color is in sRGB.
If you use this user channel in a custom shader, you may have to add a conversion as I don't believe you can change the color space of user channels at the moment.
There is a tag you can use when building Substance materials that may use this user channel (https://docs.substance3d.com/spdoc/user-data-140902410.html) but nothing when using plain colors in Painter.