The goal of the chapter is to present a model for describing and analyzing color design, and to show its potential by discussing concrete examples from the fi eld of design and architecture. The model has been developed by Ulf Klarén as a pedogogical tool based on experience and on literature from the fi elds of perception psychology, cognitive science, philosophy, ethnology, and so forth. Color constructs our inner image of space. The world of colors is complex and dynamic and colors have many sensitive qualities, but nevertheless the experience of color has a nature of coherence. Just like the rest of our sensual experiences, color is perceived and understood on different levels, from the basics that are common to all humans to the most rapidly changing cultural trends.