Yun Hyong-keun. Umber, 1988-1989. Oil on linen, 205 x 333.5 cm. Courtesy of Yun Seong-ryeol & PKM Gallery.
Yun Hyong-keun. Burnt Umber & Ultramarine, 1991. Oil on linen, 91 x 73 cm. Courtesy of Yun Seong-ryeol & PKM Gallery.
Yun Hyong-keun. Burnt Umber & Ultramarine, 1994. Oil on linen, 41 x 60.7 cm. Courtesy of Yun Seong-ryeol & PKM Gallery.