赭色，赭色可以指红褐色，现实生活中有一种泥土色素是这个颜色，而赭石是产生这种色素的矿石。

Ochre (/ˈoʊkər/ OH-kər; from Greek: ὠχρός, ōkhrós, (pale yellow, pale), also spelled ocher, see spelling differences) is a natural earth pigment containing hydrated iron oxide, which ranges in color from yellow to deep orange or brown. It is also the name of the colors produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as "red ochre".