11.3.1.5-2 Contrast

Colors should be chosen for maximum contrast against the label background.

Additional Information:
Table 11.2 rates various color combinations in terms of relative legibility. To ensure adequate contrast and prevent loss of readability because of dirt, dark characters should be provided on a light background. If colored print is used for coding purposes, it should conform to the established color coding scheme for the control room (see Section 1.3.8, Color).

Table_11.2

Table 11.2 Relative legibility of color combinations.