medium brown/blue etc
From Longman Dictionary of Contemporary Englishmedium brown/blue etcmedium brown/blue etcCCa colour which is neither light nor dark His jacket’s a medium brown colour. → mediumExamples from the Corpusmedium brown/blue etc• Beyond Volkswagens and medium blue cars or big black cars, Carla could not tell one car from the other.• It came in two colours, medium brown or medium grey; it shone with a slightly oily sheen.• She was slim, five feet four inches tall, and had medium brown skin.