Colour is an essential part of information handling. Computer science (informatics) students usually do not get a formal education in colour science, but show interest in self-study of the subject. Hypertext and multimedia presentations can be used with advantage in such situations. A CD-ROM based self-study manual has been prepared for informatics students to teach them colour science. The tutorial is built up by starting with some general errors, recommendations for good practice and links to guide the students to more profound understanding of the underlying colorimetric knowledge and functioning of display hardware systems.