[rudedogg]

Thanks for explaining that, it makes sense. I ended up writing my own Color struct to store the values in HSB like you suggest.

It's odd I couldn't find information about this anywhere. The NSColor/UIColor docs don't mention it, but there is a clue I guess. They note that NSColor/UIColor is stored as CGColor internally, and CGColor doesn't have an HSB init.

Thanks again, I searched everywhere for the answer to this.

[eridius]

More specifically, UIColor and NSColor store a reference to a colorspace and a set of components (plus alpha). The colorspace defines the number of components and their meaning. So all of the RGB colorspaces define 3 components, Red, Green, and Blue, which means UIColor and NSColor need to store the color using those 3 components (plus alpha) whenever they're using an RGB colorspace.