RGB v.s CMYK

    RGB stands for Red, Green and Blue. In color theory, these are the 3 primary colors based on light (additive color). When these colors combine they produce white, and when any two primary colors combine they produce a secondary color. The purpose for RGB is to represent and display images through the electronic system. As used in photography, it is also used through input devices such as TV, digital cameras , scanners and output devices like computers, phone or projectors.
   CMYK stands for Cyan, Magenta, Yellow and Key (Black). These colors are 3 primary colors used as ink, pigments, or paints (subtractive color). When these colors combine they produce black, and when two of these primary colors combine they produce 1 of the 3 colors of RGB. Purpose of the CMYK is to be used in color printing since it pretty much creates all the colors needed trough an image being printed.