A good selection of poems about darkness on the site Interesting Literature, including Thomas Hardy’s “The Darkling Thrush”, which is one of my favourite poems. To read “10 of the best poems about darkness” please visit, https://interestingliterature.com/2018/02/14/10-of-the-best-poems-about-darkness/.
I have myself written several poems about darkness, including “Midnight” which is reproduced below:
“Midnight, black as pitch.
No scheming demon, ghost, nor witch.
Only the darkness, which in the human heart resides,
Manifests itself in cruelty and pride”.
(Taken from “Dalliance; a collection of poetry and prose”, by K Morris, https://www.amazon.com/dp/B00QQVJC7E).