Anastasia #6 (Vol. 1) is a warm brown with a satin finish that is permanent in palette and. In comparison, YSL Ambiguous Chestnut (216) is a warm brown with a natural finish that is permanent and retails for $39.00.
YSL Ambiguous Chestnut (216) is 90% similar — it is more shimmery, darker, cooler, glossier.