Mahogany Hair For Winter If you like the idea of going red but don't want the shade to be too fiery, mahogany is a great winter hair colour. It's moody and brings the drama. "Mahogany hair colour is a reddish-brown shade with a slight violet cast," Lauren Mildice, colour specialist at Maxine Salon, tells POPSUGAR. "Think of a deep mahogany wood." Image Source: Getty / Edward Berthelot