YSL Rouge Paradoxe (21) is a neutral red with a matte finish that is permanent and retails for $39.00. In comparison, Chanel Camelia Carmin (627) is a neutral red with a satin finish that is limited edition and retails for $40.00.
Chanel Camelia Carmin (627) is 90% similar — it is more shimmery, lighter, glossier.