What is the difference between CMYK and pantone (PMS) colors?

CMYK stands for Cyan, Magenta, Yellow and Black. The combination of different amounts of CMYK inks yields over 95% of the visible color spectrum. However, there are certain colors that do not convert well using CMYK and thus require the use of Pantone colors. Pantone colors are generated using a combination of 14 base pigments mixed in specified amounts. Plastic Resource generally prints in CMYK, however, we have the ability to print PMS (Pantone Matching System) colors upon request.