Index and ring fingers: Orly Cashmere Cardigan
Middle and pinkie: China Glaze Secret Periwinkle.
The two are similar, but Cashmere Cardigan is noticeably more on the purple side, and Secret Periwinkle is more blue.
Pinkie: China Glaze Sky High-Top
Ring: OPI Teal the Cows Come Home
Middle: OPI Sea? I Told You!
Index: Zoya Tallulah
The two OPIs look very much alike. Sea? I Told You! is slightly darker than Teal the Cows Come Home, and is more of a true blue than the other, which leans more toward teal (surprise, it says it in the name). The real difference, I think, lies in the shimmer. Sea? I Told You! is filled with medium blue microglitter while Teal the Cows has silver microglitter. You can enlarge the pictures to have a closer look!