Slate gets its name from the rock used as a popular building material. Slate’s color varies in nature and can be gray, blue, greenish-gray, dark red, black, tan, and even purplish-gray. It, however, most often refers to a medium-dark gray with hints of blue.
As a neutral, slate plays wonderfully with almost every hue. For a modern palette, combine slate with neutrals like beige and sand, and add in a bright accent color like orange. To bring out any blue or purple undertones in a specific variation of slate, combine it with the same hue.