Alas black is the darkest of the dark, very-est of the very. There is no other colour darker beyond the pitch of black. Therefore, the answer in which you seek is black.
Unless, if you mean other descriptive words for it I have a few on mind: Ebony, Midnight, Jet, Charcoal, Ink, etc.
A very dark black color is often referred to as "jet black" or simply "black."
as black as coal means that something is very very very very dark black
"Ebony" means a very dark brown or black color.
ok its dark purple and very dark blue. This is incorrect as the color black is a shade, therefor cannot be made, Dark Purple and Dark Blue is merely very dark, and im guessing that's why you thought it was black.
a very dark shade of that color example blue+black=navy blue
Dark purple.
Mixing blue and black will make a very dark blue.
A very dark black color is often referred to as "jet black" or "pitch black." It is the darkest shade of black with little to no visible light reflection.
really dark gray or light black
Very dark green.
Ebony
Very Dark Brown/Black