I tried out some HTML5 and CSS3 features this weekend, and ran smack dab into a couple of "not ready for prime time" cross-browser issues -- and an important color-model problem between the web's HSL and RGB versus the models Freehand used and Illustrator uses.

Web HSL != Illustrator HSB != Freehand HSB, as far as I can tell; though Freehand's model and the web model appesr to be closer or maybe the same. Illustrator's model is NOT the same as the web's, though.

I would like to find a color-model converter utility which could convert between web RGB and HSL, Freehand RGB and HSB, and Illustrator RGB and HSB. If the converter could handle CMYK too, and Windows and Macintosh O.S. Usage of those, and if that could handle files and an on-screen, interactive color wheel and calculator.... Yes, could you throw in the moon and a hunk of cheese too?

I really would like to find and RGB to AND from HSL/HSB/HSV algorithm. So far, the only thing I've found is in the CSS3 Color module recommendation. I'd like to know, so I can do the conversions by hand, since I don't expect to learn PHP any time soon.

Thanks for any feedback!

You can try Gpick which has converters between color models (in fact you can just use right-click menu to copy color value in a particular format to clipboard. It's a rather advanced tool, you can read more about it here.

Thank you I'll check that out over the weekend.