Between 1933 and 1934, Wada published a six-volume series titled Haishoku Sōkan (A Compendium of Color Combinations). He was reacting against the chaotic, unregulated use of Western dyes arriving in Japan. His goal was to preserve the subtle, muted, yet deeply resonant color palette of traditional Japanese culture.

Sanzo-Wada DMBK — A clean, interactive web version for browsing palettes .