LORAC Dusty Plum is a warm plum with a matte finish that is limited edition and retails for $19.00. In comparison, Make Up For Ever M546 Dark Purple Taupe is a warm mauve with a matte finish that is discontinued and retails for $21.00.
Make Up For Ever M546 Dark Purple Taupe is 90% similar — it is lighter, more muted, cooler.