RGB & CMYK

RGB & CMYK

• The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors. 
• The name of the model comes from the initials of the three additive primary colors, red, green, and blue.
• The main purpose of the RGB color model is for the sensing, representation, and display of images. 
• Before the electronic age, the RGB color model already had a solid theory behind it, based in human perception of colors.

• The CMYK color model is a subtractive color model, used in color printing, and is also used to describe the printing process itself.
• CMYK refers to the four inks used in some color printing: cyan, magenta, yellow, and key(black). 
• The "K" in CMYK stands for key because in four-color printing, cyan, magenta, and yellow printing plates are carefully keyed, or aligned, with the key of the black key plate. 
• Some sources suggest that the "K" in CMYK comes from the last letter in "black and was chosen because B already means blue.