1.2.3. Colour Codes

Since in computer graphics particularly 1 byte per primary colour is used as colour depth, the numbers 0-255 are used to encode all colours of one primary colour, whereas 0 stands for the lowest and 255 for the highest intensity. Below is listed the RGB-Code of some significant colours:

• Black: (0,0,0)
• White: (255,255,255)
• Red: (255,0,0)
• Green: (0,255,0)
• Blue: (0,0,255)

The following picture illustrates how accomplishes the codification of colours in the RGB-Colour space with the numbers 0-255. The grayscale colours are on the diagonal of the cube.

RGB Colour Space and Codification (Wikipedia)

Alternatively, colours can be described using a hexadecimal notation. In this case the values range from 00 to FF, whereas 00 stands for the lowest and FF for the highest intensity.

Hexadecimal RGB-code of significant colours:

• Black: #000000
• White: #FFFFFF
• Red: #FF0000
• Green: #00FF00
• Blue: #0000FF