Anastasia Opaline is a warm purple with a frost finish that is discontinued and retails for $12.00. In comparison, Natasha Denona Smoky Plum (23P) is a warm plum with a pearl finish that is permanent in palette and retails for $29.00.
Natasha Denona Smoky Plum (23P) is 85% similar — it is darker, warmer.