noun, noun which may take the genitive case particle 'no'
single color; monochrome
Refers to something consisting of or using only one color. Often used in design, printing, and art contexts.
このプリンターは単色印刷しかできない。
This printer can only print in monochrome.
彼女は単色のワンピースを着ていた。
She was wearing a single-color dress.