OPI's Shh... It's Top Secret
This brown is so dark, it looks black and I love it. I know I lot of people are against dark shades in the summer, but I wear whatever color I want, whenever I want. Plus, I think dark colors look so nice with my tan. Just like I love the way brighter colors look on me in the colder months.
OPI describes this shade as a "deep, deep brown" and I agree 100%. This is such a great alternative to black because you get that warmth from the brown shade that makes it more wearable, in my opinion.
You can get this nail polish, which you should because this is awesome in the summer, fall, winter, and the spring, for $10 at ULTA. Check that out as well as some of their other shades!