Nippon Colors is an app contains a collection of colors traditionally used in Japanese literature, textiles such as kimono, and other Japanese arts and crafts.

Most names of colors originate from the names of plants, flowers, and animals that bore or resembled them. Certain colors and dyeing techniques have been used since the Asuka period, while others had been developed as late as the Meiji period when synthetic dyes became common.

Note that due to the long history of use of this color system, some variations in color and names do exist. Many of the names of these colors originate from Chinese, where the hierarchical color system is even more complex.