Colourmaps for checking the legibility of displays by dichromats

Please note: the colour illustration on this page is in Portable Network Graphics (PNG) format. Some older web browsers might not be able to display this image. If your web browser supports Java, you may try the Java applet version of this colour palette image.

The following picture shows side-by-side every sample of the 256 colour palette of Table II in its normal, protan, and deutan version. (Fig. 3 in Color Res. Appl. 24, 243-252 (1999) )

[Image of colour palette]

Colour picture illustrating how a 256 colour palette appears to 'colour-blind' observers. Within each block, the first column shows the original palette, the second and third columns show the simulated appearence for protanopes and deuteranopes.

Last modified: 28 July 1999 by Hans Brettel