is there an option for a CMYK color picker like Photoshop has?

[Konstrukto]

While watching a stream by a comic colorist we came upon the topic of printing your work.
It turns out that Photoshop has a CMYK color picker as shown here:

The greyed out part representing the colors that will not be visible in print.
Does Krita have a tool like this?

[Jeremiah]

Here we go:

In the specific color selector you can choose between RGB, CMYK, LAB and a few more.

[Konstrukto]

I have looked into that, the problem is that it really hardly represents an actual color selector.
At least, not in a visualised way like in the advanced color picker.
Or am I missing something there?
Imo the best thing, and the thing I’m actually looking for is something like the advanced selector with a function that tells me what I can’t use.

[Jeremiah]

After checking also the manual I’m not sure if you currently can pick CMYK colors.

It says:
"Color Space
This allows you to set the overall color space for the Advanced Color Selector.

Warning

You can pick only sRGB colors in advanced color selector regardless of the color space of advanced color selector. This is a bug."

May be this is fixed in the nightly build.

Also have a look here:

Advanced Color Selector — Krita Manual 4.4.0 documentation

and here:

Specific Color Selector — Krita Manual 4.4.0 documentation

[Konstrukto]

I think what that message is refering to is this:

[Jeremiah]

@Konstrukto

it really hardly represents an actual color selector.

Im not sure if I understand you. Remember that you have to use the color picker tool for this to work! Shortcut “P”.

While painting and therefore the painting tool is active you can just hit the CTRL key on your keyboard and the brush picks the color which is underneath it.

[Konstrukto]

In my mind that means that I need to pick the colors from my piece and then check if they match(?)
I would prefer it the other way around.
Starting my drawing knowing what colors I can and can not use.

[Jeremiah]

I am not aware that this is possible.

If I understand you correctly, then do you looking for a out of gamut warning.

[Konstrukto]

Yes, exactly

Edit: I would like to note that if the bug the manual mentions is fixed we can have the next best thing.
The advanced color selector only showing the colors available within the CMYK gamut.
That is, if I’m interpreting the screenshot I posted above correctly.

[Jeremiah]

Sorry for the confusion but what you are looking for is probably possible. I guess I was wrong before…

I’m a novice in digital painting and have only a few months experience with Krita.

I’m running Krita 4.4.3 nightly and with this version seems possible what you are looking for. In the Menue you can activate it through: View/Out of gammut warnings + Soft proofing.

[Konstrukto]

Thanks! I’ll look into that

[Jeremiah]

I think that is exactly what you are looking for. I tested it quickly. It warns me when I apply colors which are not possible in CMYK.

The color green represents “out of gammut”.

Edit: I learned something too.

[Konstrukto]

LOL, that’s pretty scary!

But indeed, that is what I’m looking for.
I actually think that’s better than having the colors greyed out in the selector.

[Jeremiah]

I think you can even change the warning color but I am not sure…

See under “Gamut warning” in the manual

Soft Proofing — Krita Manual 4.4.0 documentation

[Konstrukto]

Seems to be so, yes.
The green is very obvious though!

One thing to note:
The big difference with the greyed out PS color selector is that the gamut warning will point out all colors that will change in print, i.e. it also colors line-art.