Chanel Sky Line Le Vernis ($30.00 for 0.40 fl. oz.) is described as “pale and pearlescent, nearly metallic… the beauty of blue.” It’s a pale sky blue with a hint of periwinkle and threads of metallic silver-white. I couldn’t think of anything that would dupe this. Cult Nails Princess is more of a powder blue. Zoya Skylar is much darker. I haven’t reviewed it yet, but I can see that Essie Blue Rhapsody is bluer, darker. If you have a closer dupe, I’d love to hear about it!