I recommend Dinto One by One Lash Definer #01 Warm Black.

Ever since I stumbled upon the brand Dinto, I’ve been using only their mascara and eyeliner!! The color is somewhere between black and brown—not too black and not too brown—so I really love the subtle shade!! I’m even more satisfied because it makes my lashes look longer, and since there isn't much drooping, it was great even when I wore it for a long time. There was a little bit of fallout, but that only happens when you use it for too long!! Highly recommend it.