noun, noun which may take the genitive case particle 'no'
deep brown; dark brown
A brown so dark it is nearly black; used as a noun or with の to modify another noun.
彼女は黒茶色の髪をしている。
She has deep brown hair.
この革のソファは黒茶色で、落ち着いた雰囲気だ。
This leather sofa is dark brown and has a calm atmosphere.
焦げ茶色 is a burnt brown, often with reddish undertones, whereas 黒茶色 is a cooler, deeper brown closer to black.
Compound of 黒 (くろ, 'black') + 茶色 (ちゃいろ, 'brown'), literally 'black-brown'.