A water-based acrylic hobby paint manufactured by Games Workshop.
A non-toxic, water-based acrylic paint optimized for application onto resin, plastic, and metal miniatures.
Dries to a smooth, flat matte finish. Russ Grey is a cool, desaturated blue-grey tone. It functions as a core mid-tone for painting Space Wolves power armor in Warhammer 40,000. 
As a Layer paint, it has a lower pigment density and a smoother, more fluid flow out of the pot than a Base paint. This makes it perfect for blending, glazing, and layering straight over darker base coats without clogging fine details.
It is typically applied directly over a dark base coat (like The Fang or Chaos Black) to form the dominant blue-grey hue of the model, which is then traditionally edge-highlighted using Fenrisian Grey. It is also widely used for painting cold stone landscapes, industrial scenery, and Aeldari vehicles.