noun, noun which may take the genitive case particle 'no'
soot color; dark grayish brown
A dark, muted brownish-gray reminiscent of soot. Used as a noun or with の to describe the color of objects.
彼女は煤色のコートを着ていた。
She was wearing a soot-colored coat.
壁を煤色に塗った。
I painted the wall a soot color.
Compound of 煤 (すす, 'soot') and 色 (いろ, 'color'). The reading すすいろ is a straightforward combination of the kun'yomi readings of the two kanji.