Alternative color names – Dulux Shadow Line, Dulux Grey Pennant. Dulux Matt is a smooth and creamy emulsion paint for use on walls and ceilings which is ideal for a modern, flat finish. Natural Slate has warm tones, so if you have a north-facing room try this paint to maximise natural light. When paired with an off-white, like Dulux White Mist, the lighter and darker colours will offset each other to create a calming space. Other greys to pair with Natural Slate for tonal combinations are Dulux Chic Shadow and Dulux Urban Obsession. Dulux Natural Slate will provide a middle ground between these two lighter and darker greys.