Jett Print are frequently asked this question about the “CMYK” acronym. Simply, CMYK stands for four ink colors – Cyan, Magenta, Yellow and Black.

In Offset printing these four CMYK colours are applied to the paper in layers. By overlapping these four colours in various concentrations, a huge number of other colours can be created. As a result, the combined visual effects of these four CMYK colours produce what is commonly known as Full Colour Printing.

In Digital Printing, it isn’t imperative that CMYK be used, however, it will produce more desirable results than if the file was created in RGB. RGB (Red, Green, Blue) is the typical color space used by electronic displays, monitors, pda screens, etc. In RGB, images are created by combining red, green, and blue light. Process of addition can create millions of different colors by using varying concentrations of the primaries. All files supplied to Jett Print will be flight checked & any RGB will be converted to CMYK.

Other names for the CMYK printing method include Four Colour Printing, Four Colour Process or simply Process Printing. Hence, all of the additional colors that can be created from the four CMYK colours are referred to as Process colours. The CMYK Process is used for printed matter that contains photographs and other designs of varying colours.

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 (cyan).

If you have any questions about CMYK colours or Full Color Printing, please contact us. We can offer advice on just about any printing topic and can simplify the task of buying printing for you.









Til the next blog, ciao