An oxide system Sc2-xFexO3 prepared by a conventional solid-state reaction method was found to change its color from the well-known reddish color at x = 2.0 to a yellowish color at x approximate to 0.6 and to a greenish-yellow color at 0.2 <= x <= 0.4. According to the structural characterization results for this system, the monophasic corundum phase region persists for 1.6 <= x <= 2.0, whereas the bixbyite-type phase is monophasic for 0 <= x <= 1.0. The intermediate region of 1.2 <= x <= 1.4 is a mixed region. Because green is a rare color for iron oxides, powder of the most typical composition, x = 0.4, with (L*, a*, b*) coordinates of (77.3, - 0.5, 51.0) was tested as a pigment for a Japanese-style painting and also as an overglaze enamel on porcelain; reasonably good results were obtained.