Colours are dull and can't convert CMYK to RGB

[MartinaB82A]

Hi there! 

I am completely new to Illustrator, I was trying to create a 3D text for the first time and I noticed problems with the coulours.

All my colours seem dull and when I pick the colour, there is a warning saying it's out of gamut.

I have tried to do Edit >  Modify Colours > Convert to RGB but the option is in grey and can't do anything about it.

I also compared my colours settings with what people said online, all seem ok but still I can't picked the colours that I want.

Please bare in mind I know nothing of Illustrator, I need steps to get to the solution 🙂

[welding5FBE]

My questions is almost the same.I hope i will get my asnwer here.

[Ton Frederiks]

Start working in an RGB document, you may create a new document based on Art & Illustration preset.

If you work in a CMYK document for a CMYK printing press, there is not much you can do about the colors, CMYK inks are limited in what they can reproduce.