Farrow & Ball's most popular shade of aqua is a lighter version of an archived Farrow & Ball colour, Powder Blue. Pale Powder has an unparalleled softness and in north facing rooms can read almost as a delicate grey, but it is rarely cold due to the addition of green pigment. It is a great favourite for use in pretty attic bedrooms where it can be brushed onto both ceiling and walls to create an airy feeling of light and space. 
 
Recommended Primer & Undercoat: White & Light Tones