coal-black
US /ˈkoʊl.blæk/
UK /ˈkoʊl.blæk/

1.
pikzwart, gitzwart
of the deepest black color; extremely dark
:
•
Her long, flowing hair was coal-black.
Haar lange, golvende haar was pikzwart.
•
The night sky was coal-black, with no moon visible.
De nachtelijke hemel was pikzwart, zonder maan zichtbaar.