CMYK

CMYK is a subtractive colour system meaning the more colours you add the darker the colour gets, because as you add colour light is removed or absorbed to create different colours. CMYK is mainly used within professional printing as it corresponds to the four colours used in digital printing. Within an image using CMYK colours are made up of cyan, magenta, yellow and black subtractive primaries. Each colour within the image has a channel which when combine create a full colour image with each colour corresponding to one of the four colour printing plates used within four colour digital printing. Each colour within CMKY is a subtracted primary, each of which has a addictive primary missing therefor when two subtractive primaries overlap only one addictive primary is visible. Consequently when cyan and magenta overlap they create blue, when cyan and yellow overlap they create green, when magenta and yellow overlap they create red and when all three colours overlap they create black as no light can escape.