Guerlain Rouge Saphir (821) is a cool red with a natural finish that is discontinued and retails for $58.00. In comparison, Chanel Rouge Majestueux (847) is a warm plum with a natural finish that is limited edition and retails for $45.00.
Chanel Rouge Majestueux (847) is 85% similar — it is less shimmery, more muted, cooler.