Red-gray, a color that appears as a combination of red and gray, can also be described as other similar shades. The color may be referred to as terra-cotta, a reddish-brown shade of clay commonly used in pottery. Ashen-red and dusty rose are also close synonyms for this color. Another shade that can be used as a synonym is rust, a reddish-brown color that is commonly associated with an oxidized metal surface. Wine and maroon can also be used to describe the hue, although these two colors are more on the reddish side. All in all, these colors are great alternatives for red-gray and can be used interchangeably.