No sure if you have noticed but the almost black nails look is still in. You can try a totally black shade or deep colors like blue or purple infused with a black hue. 

These are Talking Makeup’s favorites:

Try MAC Cosmetics Nail Lacquer in Nocturnelle, which is a Black-as-night black (Cream), or in Illegal Purple, which happens ti be my new absolute favorite!

And, CHANEL Le Vernis Nail Colour in #461 in Blue Satin.