A lively cobalt blue
This strong cobalt blue, with its dose of black pigment, takes its name from the dark sticky tar often used in roofing. Pitch Blue has an almost purple feel to it and is extremely lively in south facing rooms, especially when contrasted with bright shades such as All White. However, it looks more sober and rich when used in areas deprived of light or those lit in the evening by candles. Dark Tones Primer & Undercoat.