The word(s) "darkness" appears 30 time(s) in 28 verse(s) in Quran in Abdullah Yusuf Ali translation.

(21) And a Sign for them is the Night: We withdraw therefrom the Day, and behold they are plunged in darkness;

(22) He created you (all) from a single person: then created, of like nature, his mate; and he sent down for you eight head of cattle in pairs: He makes you, in the wombs of your mothers, in stages, one after another, in three veils of darkness. such is Allah, your Lord and Cherisher: to Him belongs (all) dominion. There is no god but He: then how are ye turned away (from your true Centre)?

(23) He is the One Who sends to His Servant Manifest Signs, that He may lead you from the depths of darkness into the Light and verily Allah is to you most kind and Merciful.

(24) An Messenger, who rehearses to you the Signs of Allah containing clear explanations, that he may lead forth those who believe and do righteous deeds from the depths of darkness into Light. And those who believe in Allah and work righteousness, He will admit to Gardens beneath which Rivers flow, to dwell therein for ever: Allah has indeed granted for them a most excellent Provision.

(25) And the moon is buried in darkness.

(26) Its night doth He endow with darkness, and its splendour doth He bring out (with light).

(27) And the Dawn as it breathes away the darkness;-

(28) From the mischief of darkness as it overspreads;