I am creating a little color wheel/palette software with processing (will release the code when it start making sense ;) )  and I use the HSB color mode to simplify the calculation of the color wheel. 

Now I would like to display the RGB of the colors but the only data I have is the HSB, is there a simple way to display these data ? and does anyone know if there was a colorwheel/palette software created in processing ?  

I would like to create my own color tool since there doesn't seems to be a solid open source cross platform software that handle that elegantly (yet there is a lot of website that has really good tools) 

thanks !