We propose replacement colourmaps that allow a designer to check the colour
s seen by protanopes and deuteranopes. Construction of the colourmaps is ba
sed on the LMS specification of the primaries of a standard video monitor a
nd has been carried out for 256 colours, including 216 colours that are com
mon to many graphics applications of MS Windows and Macintosh computing env
ironments. (C) 1999 John Wiley & Sons, Inc.