What is another word for coal-black?
Pronunciation: [kˈə͡ʊlblˈak] (IPA) 
Coal-black refers to a deep shade of black, often associated with the color of coal. There are many synonyms that can be used to describe this shade of black, including ebony, jet, obsidian, pitch-black, matte-black, and ink-black. Other words that can be used to describe a black color with a hint of blue or purple undertones include inky, midnight, and sable. Meanwhile, words such as sooty, smoky, and dusty-black can be used to describe black colors with a slightly dull or hazy appearance. Ultimately, the word choice depends on the specific context and intended effect desired by the writer.
