Definitely Black is described as a "deep black." It's a rich, neutral black with a satiny finish. It had fairly good color payoff in a single pass, and it was buildable to opaque color in two layers. A note about this shade... my pencil actually says "Definedly Black," not Definitely--and online it is listed as Definitely, as in the press release, it was written as Definitely. I'm not sure who's in the wrong here! There are numerous black eyeliners that wear better and longer (including some by MAC).