The interplay of color and architecture shapes the perception of space and defines the tectonic relationships. The fascinating spatial potential of color and the multifaceted interpretive possibilities in dealing with color are design and communication tools that are often underutilized. Color fluctuates between autonomy and purposefulness and should be understood as a material in its own right, with which one can design and plan. The book examines both the comprehensibility and planability of color as well as its indeterminacy and experiential value. Through examples from art and architecture, it illustrates the spatial effects of color and its interplay with structure, light, and geometry.