I've seen phrases like "in the dark" and "in darkness" in many examples so far:

"I turned off the light and lay in the dark." "All the lights went out and we were left in the dark."

"His face was in darkness." "The lamp suddenly went out leaving us in darkness."

But can I replace "in the darkness" with "in the dark" in this sentence?

"He was sitting alone in the darkness" (I came across this sentence in OALD).

I've seen phrases like "in the dark" and "in darkness" in many examples so far:

"I turned off the light and lay in the dark." "All the lights went out and we were left in the dark."

"His face was in darkness." "The lamp suddenly went out leaving us in darkness."

But can I replace "in the darkness" with "in the dark" in the following sentence?

"He was sitting alone in the darkness" (I came across this sentence in OALD).