Cannot set specific color in Illustrator

[Guest]

When I try to set specific colors, Illustrator sometimes changes it to a nearby value. For instance, I cannot set the value H=217, S=100, B=42. When I click OK and open the Color Picker again, it has changed to H=214, S=100, B=41. When I set the values, both the "Out of gamut" and the "Out of Web Color" warnings are lit (guessing it has something to do with this).  However, the document is created in color mode RGB and when I look in File -> Document Color Mode, "RGB Color" is checked.

How can I disable this feature?

[Monika Gause]

HSB is converted to RGB immediately.

[Guest]

Not sure what you mean, can you please clarify?

When I re-change the Hue value to 217 again, I can see that the color changes, so the hue 217 is not the same as 214.

[Monika Gause]

HSB is a different system than RGB and Illustrator converts your HSB to RGB via color management immediately after you enter close the color picker.

[Guest]

Ok, but Illustrator still changes from one color to another (visibly). How can I disable that?

[Monika Gause]

You can't.

[Guest]

Ok, I can't disable it, but why does Illustrator change the color at all? What is so special about H=217, S=100, B=42 that makes it "invalid" as a choice?

[Monika Gause]

wgwrtgrtwegrfgeqrf  schrieb

Ok, I can't disable it, but why does Illustrator change the color at all? What is so special about H=217, S=100, B=42 that makes it "invalid" as a choice?

It's out of gamut. You can try and set your RGB working space profile to some larger profile such as Adobe RGB. But then when you export the image for printing or the web it will be converted anyway. I mean you can set any color you want, but if the presentation device can't handle it, it's only theoretical.

[sarapixels]

Might this help?
HSV to RGB conversion | color conversion

[Guest]

Illustrator automatically does the conversion and I can see the corresponding RGB values. The problem here is more that Illustrator does not allow me to choose a particular color.

[Ton Frederiks]

It is probably better to use RGB values in an RGB document and use the Color Panel to minimize rounding errors.

Try the color Panel and enter H=217, S=100, B=42

You will notic it immediately change to H=217,01, S=100, B=41,96

Close and when rounded gives the correct values.

[Guest]

I learned somehing new today...

Thanks to both of you, really appreciate your help!

[Doctor_St@s]

The proper answer should be like:

In order to prevent AI's auto changing user colors we need to switch the document's color mode from CMYK to RGB:

File -> Document Color Mode -> RGB

[Ton Frederiks]

I don't think that is the proper answer.

In order to prevent AI's auto changing user colors work with RGB colors in an RGB document and CMYK colors in a CMYK document.