expression, i-adjective
comparable to; not inferior to; equal to
Used to say that something is just as good as something else, often in formal or written contexts. Commonly appears as ～に遜色ない or ～と比べて遜色ない.
See also: 遜色がない (そんしょくがない)
この新製品は海外の有名ブランドに遜色ない品質だ。
This new product has quality comparable to famous overseas brands.
彼の実力はプロ選
His ability is not inferior even when compared to professional players.
遜色 (そんしょく) means 'inferiority' or 'poor comparison', from 遜 (humble, inferior) and 色 (color, appearance). Combined with ない to form a set phrase meaning 'without inferiority'.