Very dark greys can be used as an alternative to black, with a little more warmth and depth. Based on the traditional roofing material, Slate is a deep grey that is close to black. Completely timeless, it has a complementary palette of warm tones, either rich neutrals or nature-derived dark reds and oceanic blues.
Windsor Grey is a low-gloss dark grey with an inkling of blue in its mix. With an echo of regality, this colour is a safe bet for any style of architecture but is often used on contemporary buildings for cladding and roofing, in place of a true black. It looks great juxtaposed against pale blues or offset with maroon shades.