CMYK

(cyan/magenta/yellow/key back)

Often referred to as process colour, or four colour.

It is a subtractive colour model, used in colour printing.

It works by partially or entirely masking certain colours on the typically white background.

It is called a subtractive model because inks subtract brightness from white.

Traditional printers often use Pantone spot colours when printing Work. Spot colours are mixed like paint and printed one at a time.

-----------


CMYK is a subtractive colour model. used in
colour printing. Where two colours overlap,
only one additive primary is visible.
Blue is formed where cyan and magenta overlap.
Cyan and Yellow overlap to produce green.
Magenta and Yellow combine to form red.
Where all the subtractive colours overlap,
black is produced.

Because of the issue of converting from RGB to
CMYK for printing. It is important that designers
use swatches when designing if an exact colour
is important. Swatches provide the designer with
a printed example of what the colour will look like
on paper. The selected swatch can be entered into
photoshop with a code provided nezt to the swatch

The CMYK colour model is used in the printing process. RGB is produced
using light and nto on a printing page. This is where CMYK comes in.,
The four colour printing process used four printing plates. When the
colours are combined on paper, they form small dots, but the human
eye sees the full image.

When designing on screen you will mostly be
working in RGB, although your printed final
piece will be CMYK. As you can see in the
colour swatched to the left, there is a
slight shift between the RGB and CMYK colours.