RGB versus CMYK | label.co.uk
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RGB versus CMYK

What is the difference between the two colour sets?

RGB Circles vs CMYK Circles

This week we discuss colours or colour spaces. They are elementary for the creation of print data. The question of the week is: “What exactly is the difference between RGB and CMYK?

Let us first take a look at the RGB colour space: This additive colour space consists of the three primary colours red, green and blue.  The human eye perceives colours by mixing these three primary colours.  This is why RGB colours are colloquially referred to as screen colours.  They are mainly used for displaying colour images on monitors or television sets.

In contrast, the CMYK colour model is called a subtractive colour model. This model consists of the colour components cyan, magenta and yellow, supplemented by the black component Key.  Since the three basic colours C-M-Y cannot represent deep black, the colour model was supplemented by the printing colour black (key). All colours can thus be represented by mixing the different colour components.  The CMYK model forms the basis for modern four-colour printing.

Colours that are created in RGB cannot be printed. They are automatically converted into CMYK before the printing process. It can happen that the colour result is distorted. To avoid this, we ask you to create your printing data or colours for printing in CMYK.

To help you, we have compiled a leaflet on the correct creation of printing data, which you can view and download here.