The purpose of the CMYK process is to reproduce full-color photographic images. It is comprised of 4 inks placed on paper in layers of dots to combine to create the illusion of many more colors. CMYK colors are used in a wide variety of print materials, including magazines and newspapers. Their limitation includes color inconsistency – the same color may turn out differently even when the same color appears on multiple pages or on the same page.
Spot colors, also known as the Pantone Matching System (PMS) is a system of pre-mixed inks. One ink color is chosen for each color in the publication. This is a similar system to that of house paints – each color corresponds to a number and a swatch sample. This color matching system ensures the consistency that is lacking with the CMYK 4-color process system.
Knowing the difference between CMYK and PMS matching inks makes all of the difference in accurately adapting computer and web-based documents into beautiful printed pieces. Ask the printing experts at JPT Graphics if you have any questions about which color process works best for your printing needs.