reddish brown

It is more yellowish than vermilion. Tan means red earth, and the red color of mineral origin was called tan. In Wei Wei Wen Biography, the country of Wa is described as "其山有丹" (其山有丹). It means that there was red soil in the mountains. The red soil was called "masoho" or "mahani" because of its beauty, or simply "hani. Tanshin-o-meshi" is the state of genuine (true) sincerity. The same nuance of "bright" and "obvious" as red remains in tan.