Natasha Denona Swing (402M) is a warm plum with a pearl finish that is permanent in palette and retails for $29.00. In comparison, Chanel Pourpre Brun (58) is a warm plum with a semi-matte finish that is limited edition and retails for $30.00.
Chanel Pourpre Brun (58) is 85% similar — it is less shimmery, darker, cooler.