Traditional Chinese Colors Indigo dyeing
Traditional Chinese Colors 
Japanese Color Encyclopedia What is Kachi-iro? An explanation of the origin, history, and color schemes of traditional Japanese colors.
Japanese Color Encyclopedia What is Onando-iro? An explanation of the origin, history, and color scheme of this traditional Japanese color.
Japanese Color Encyclopedia What is Koi-ai (deep indigo)? An explanation of the origin, history, and color scheme of this traditional Japanese color.
Japanese Color Encyclopedia What is Hanada-iro (繹色)? An explanation of the origin, history, and color scheme of this traditional Japanese color.
Japanese Color Encyclopedia