Table 6 Recommendations for colour-coded designs

1

Avoid specific colours if no redundancy is possible

2

Include redundancy, especially lightness difference, whenever possible

3

Segment areas of colour which might otherwise be confused

4

Avoid dark red or green text on a black background

5

Enhance colour conspicuity such as using white or yellow for objects which have to be seen in poor illumination or at night

6

Avoid glare