The thing behind printing is that has a more elaborate process, especially regarding the colors, and as this infographic will show you, there is a difference, more pointedly between the RGB and CMYK spectrum.
RGB is when Red, Green, and Blue light are added together in various ways in order to produce a large array of colors, and is the basis for color display in electronics and before the electronic age has been used in theory behind the human perception of colors.
CMYK on the other hand is a subtractive color model, because it subtracts from brightness; it refers to Cyan, Magenta, Yellow and Key (Black), and works by partially or entirely masking the colors on a lighter, or a whiter, background.
This infographic is divided into two helpful and very colorful sections that will help all artists, clients and random passersby all pros and cons of RGB and CMYK.
Infographic by Cardprinting.us