Chanel Penombre (327) is a warm pewter with a sparkle finish that is limited edition and retails for $36.00. In comparison, Natasha Denona Glam (328M) is a warm pewter with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Glam (328M) is 85% similar — it is more shimmery, lighter, warmer.