You would have heard these terms used when dealing with your web designer or your print company, web designers want RGB files and printers want CMYK. So what’s the difference? What are they? I will give you a little insight that might help you out in the future. You would have heard these terms used when dealing with your web designer or your print company, web designers want RGB files and printers want CMYK. So what’s the difference? What are they? I will give you a little insight that might help you out in the future.

RGB
Your screen uses RGB Colour model where Red Green and Blue light are added together to reproduce an array of colours, RGB is made up of over 16 million colours. Web designers want RGB because you a viewing the design on the screen that uses RGB.

CYMK

Cyan Magenta Yellow Black (K is used for black to differentiate from blue), when artwork is produced for print the printing process is of made up of 4 colours, and is a percentage of each colour that makes up the other colours see picture for example.

When you submit artwork in RGB to printers they cannot print with it because RGB has a much wider array of colours.

Hopefully that as given you a little insight to what the two colour models are without going into any details, hopfully you won’t get confused when your printer or web designer asks for certain file.