Traditional Chinese Colors Azurite
Traditional Chinese Colors 
Traditional Chinese Colors What is "Kūsei" (空青)? An explanation of the origin, history, and color scheme of this traditional Chinese color.
Gemstone Color Encyclopedia What is Azurite? An explanation of the origin, meaning, and color combinations of this gemstone.
Traditional Chinese Colors What is Sansei? An explanation of the origin, history, and color scheme of this traditional Chinese color.
Traditional Chinese Colors What is ultramarine blue (gunjō)? An explanation of the origin, history, and color scheme of this traditional Chinese color.
Traditional Chinese Colors What is Shiqing (石青)? An explanation of the origin, history, and color scheme of this traditional Chinese color.
Japanese Color Encyclopedia