Colour Wheel - Oki OKIPAGE 8c Colour Manual

Colour wheel

The relationship between colours can be best shown on what
is known as a colour wheel. The hue value of a particular
colour is expressed in degrees. Red for example is at 0° and
green and blue are located at 120° and 240° respectively.
The subtractive primaries, yellow, cyan and magenta are
located at mid points between these.
The colour wheel shows the following relationships:
• the additive primaries are displaced by 120° from each other.
• the subtractive primaries are displaced by 120° from each other.
• each colour is a secondary colour of the two colours either side of it.
e.g. mixing equal quantities of yellow and magenta will produce red.
• a colour is directly opposite its complement.
10
We can continue to mix neighbouring colours on the colour
wheel to produce further, intermediate colours. The number
of colours on the colour wheel now doubles to twelve (as
shown below). Repeating the procedure a number of times
produces a colour wheel with subtle changes of hue from
neighbour to neighbour.
Colour Wheel
showing RGB (circles), CMY (squares) and their
first set of intermediate colours.
OKIPAGE 8c