It's dark outside.
It was getting dark.
She is dark-skinned.
He had dark brown hair.
Don't go out after dark.
It is dark in that room.
It was dark in the room.
Are you afraid of the dark?
Don't walk alone after dark.
Don't let her go out after dark.
We came back to camp before dark.
It was quite dark when I got home.
I felt for the light switch in the dark.
I don't like walking home alone after dark.
You'd better hurry up if you want to get home before dark.