I think I remember a professor of mine telling us to do something in Photo Shop in CMYK, but I did it in RGB and they didn't seem to notice. September 27, - Thanks! I had heard of the CMYK and RGB hue color wheels, but didn't know what they were about and you explained it perfectly. Any color can be made using only these three transparent primary colors. They make blue combining transparent cyan PB15 and Magenta PR122. Just so you know, artists today can make red with transparent yellow PY153 or PY100 and transparent magenta PR122. How do I Choose the Best Office Color Schemes?.