Thought I’d post this up quickly as I had to do it for someone recently.
I have been told that Photoshop does actually have a colour wheel somewhere but I couldn’t find it. In any case, the general online consensus is that it is not worth the time it takes to find it, being completely and utterly deficient on so many levels. And the fact that there are so many payware programs available which provide a colour wheel suggest that I am not the only one who has tried to remedy this.
So I had a quick surf around and came up with this: