Further information about colour theory

Colour theory is complex and is based on colour models and colour spaces.

Colours are defined in many ways, 3 of the more common ways are:

  • RGB (red, green, blue) – which describes the type of light emitted to produce a colour
  • HSL (hue, saturation, luminance) – commonly used by artists
  • CMYK (cyan, magenta, yellow, black) – used in printing to describe the inks required to produce a given colour

This colour can be defined in the following ways:

RGB(35, 165, 142), HTML traditionally uses hexadecimal conversions of the RGB value to define colour. For example #23A58E

HSL(169.38°, 78.79%, 64.71%)

CMYK(77.75%, 11.45%, 54.28%, 0.34%)

You can use at least one of these methods to define colour in most software packages.