What style of vase had a black background in Greek art?

The style of vase with a black background in Greek art is known as the "black-figure" technique. In this method, figures and scenes were painted in a black slip on the natural red clay of the vase, and then the entire piece was fired in a kiln. The black areas would remain glossy and dark, while the red clay would show through where the slip was not applied. This technique was prominent from the 7th to the 5th centuries BCE.