Urban Decay Backfire (Afterdark) is a warm plum with a frost finish that is permanent in palette and retails for $19.00. In comparison, MAC A Medley of Mauves #2 is a warm plum with a metallic finish that is permanent in palette and retails for $21.00.
MAC A Medley of Mauves #2 is 90% similar — it is lighter.