Another oldie but goodie. Essie St. Barth's Blue is the softer cousin of Essie Sag Harbor. A blue/grey with silvery shimmer. Very soft and light. Not as sheer as I thought it was going to be and a dream to work with. That is the one reason I love old Essie. This one is a bit stark but I think would look awesome on someone darker than me - which is 90% of the world's population.