Cult Nails Princess Nail Lacquer ($10.00 for 0.50 fl. oz.) is a light-medium dusty blue with a subtle pink-copper shimmer. Chanel Coco Blue is darker, bluer. Rescue Beauty Lounge Concrete Jungle is darker, grayer. Butter London Lady Muck is darker, grayer, and has silver shimmer. Chanel Riva is lighter, less blue. None of these comes close, though–not even in the base color–let alone having the coppery shimmer. A lot of times you’ll find something that has a similar base color, but I couldn’t think of anything that was even close to being a dupe.