RGB: Red-Green-Blue – We use RGB in electronic displays, such as CRT, LCD monitors, digital cameras and scanners. It is an additive type of color mode that combines the primary colors, red, green and blue, in various degrees to create a variety of different colors.
CMYK: Cyan-Magenta-Yellow-Black – We use CMYK for color printing. CMYK refers to the four inks used in some color printing: cyan, magenta, yellow and key (black).