Pitch black and Unlit

Pitch black noun - A very dark black.

Unlit and pitch black are semantically related. in lack of light topic. In some cases you can use "Unlit" instead an adjective phrase "Pitch black".

Unlit adjective - Being without light or without much light.

Pitch black and unlit are semantically related. Sometimes you can replace phrase "Pitch black" with "Unlit", this terms are similar.