Being a web designer I live in the world of RGB and the thought of CMYK and the finality of print scares me (a lot!). However, I regularly need to convert a logo to CMYK in Adobe Illustrator from a graphic that is in RGB colour mode. In Illustrator, you simply do the following:
Go to File » Document Color Mode and check CMYK
Yeh I know it's simple but being a AI newbee, I have spent ages searching for a solution before remembering. This process also works in reverse (CMYK to RGB):
Go to File » Document Color Mode and check RGB.
Select everything in your document and go Filter » Color » Convert to RGB.
A good way to check what colours are being used in your document is to:
Open up the colour palette.
Bring up the menu by clicking the little arrow in the top right hand corner and select "Small List View". This brings up (surprise surprise) a list view of all colours with a little symbol representing the colour mode type (ie: RGB, CMYK...etc).
Now click on an element in your document and the list will jump to the colour being used. You can then determine whether it's CMYK or RGB...etc
Hope this helps
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