Payne's Grey is a blueish dark grey color made by mixing a blue and a black together, typically ultramarine and bone black. Sometimes a touch of red is added to the mix. Check the back of a tube of paint to find out exactly what is in that particular Payne's Grey.
Used straight from the tube, Payne's Grey is a very dark and cool color. When used thinly, the blueness becomes more apparent.
The color Payne's Grey is believed to have been named after a British watercolorist and art lecturer, William Payne (1760--1830), who recommended the mixture to students.

