Translation of "crn" into English

Imam mačku i psa. Mačka je crna, a pas je beo.

I have one cat and one dog. The cat is black and the dog is white.

Kažu da ima jedna ogromna reka sa vodom crnom kao ugalj.

They say there's an enormous river, with water as dark as coal.

Po kom pravilu četka mora da bude crna?

What rule says a brush must be sable?

Да сам црн као терену под овде синоћ.

Would've been black as pitch under here last night.