Teruko Sakurai is CEO of Tokyo Colors, a company focusing on design, color consulting and corporate training. She advises product and advertising clients as well as color science instructors at universities and design schools, in addition to producing her own teaching manuals. In 2014, she was the first Japanese to be certified as an instructor in the Swedish National Standard Natural Color System (NCS). She is a member of the Japan Color Society, a color design master with the International Color Design Association, and a certified lecturer for the Color Certification Association and Colorist Association of Japan. She's the author of two bestselling Tuttle guides: Japanese Color Harmony Dictionary: Modern Colors of Japan and Japanese Color Harmony Dictionary: Traditional Colors of Japan.