Chanel Rouge Vie Radiant (138) is a cool red with a satin finish that is limited edition and retails for $40.00. In comparison, YSL Rock'N Red (8) is a cool red with a luminous finish that is limited edition and retails for $38.00.
YSL Rock'N Red (8) is 90% similar — it is more shimmery, cooler, glossier.