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.
This printer can only print in monochrome.
She was wearing a single-color dress.
単色 means monochrome or single-colored, the direct opposite of カラフル's many colors.
単色 means 'a single color' and can still have a pattern in that one color, whereas 無地 specifically means no pattern at all.
Compound of 単 (single) and 色 (color).