Almost always used in negative constructions like 遜色がない (is not inferior, bears comparison). Rarely appears in affirmative sentences.
See also: 遜色がない
His work bears comparison with that of professionals.
This new product has performance that is not inferior to the conventional one.
Standard kanji spelling.
From 遜 (humble, inferior) + 色 (color, appearance). The exact historical derivation is uncertain; the word is used to express inferiority in comparison.