illumination - the degree of visibility of your environment

night - darkness; "it vanished into the night"

lightlessness, pitch blackness, total darkness, black, blackness - total absence of light; "they fumbled around in total darkness"; "in the black of night"

brownout, dimout, blackout - darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)

semidarkness - partial darkness

scene - the place where some action occurs; "the police returned to the scene of the crime"

condition, status - a state at a particular time; "a condition (or state) of disrepair"; "the current status of the arms negotiations"

unenlightenment - a lack of understanding

value - relative darkness or lightness of a color; "I establish the colors and principal values by organizing the painting into three values--dark, medium...and light"-Joe Hing Lowe

complexion, skin color, skin colour - the coloring of a person's face