Because the original Haishoku Soukan is a historical work, parts of Wada's color research can sometimes be found in digital museum archives or public domain repositories.
Sanzo Wada (1883–1967) was a multifaceted Japanese artist, kimono designer, and Academy Award-winning costume designer. During the early 20th century—a time when Japan was rapidly absorbing Western influences—Wada sought to document the traditional Japanese perception of color, which emphasizes relational shifts in tone and seasonal meaning. www.giuseppegallo.design He founded the Japan Color Research Institute japanese dictionary of color combinations pdf link
The physical book is highly regarded for its pocket-sized, tactile design and "cut-out" swatches. Because the original Haishoku Soukan is a historical
Due to copyright laws (the original 1933 text is in the public domain, but modern reproductions and English translations are protected), you have three options to access a high-quality digital copy. japanese dictionary of color combinations pdf link