YSL Fuchsia Tourbillon (31) is a cool fuchsia with a glossy finish that is permanent and retails for $34.00. In comparison, Urban Decay Sheer Anarchy is a cool fuchsia with a natural finish that is discontinued and retails for $18.00.
Urban Decay Sheer Anarchy is 85% similar — it is darker, more muted, less pigmented.