I decided to flip the pattern of the gradient and chose a slight brighter blue for this design because I really wanted the black to pop. I started with two coats of Sinful Colors Endless Blue. I bought this color on a whim when they were all .99 at Walgreens and it's sat in my polish drawer since September. It's such a gorgeous electric blue!
For the black I mixed Sinful Colors Black on Black and a bit of thinner together. I used a slightly bushy nail art brush and painted down the center of my nails with short feathered strokes.
This is such a striking design. I was going to just paint my right hand solid blue but loved this so much I did it on both hands.