From Longman Dictionary of Contemporary Englishnut-brownˌnut-ˈbrown adjective dark brown in colour
Examples from the Corpus
nut-brown• It will have your mouth watering, just thinking about a good nut-brown ale or creamy porter.• The latter features gossamer-thin pasta packets napped with nut-brown butter and crispy chestnut rounds.• Aunt Liti had a nut-brown face, hard black eyes and a hook of a nose. 