Farrow & Ball Railings No. 31More blue than black, Railings is a softer alternative to black which is particularly suited to the ironwork it takes its name from. When used in Full Gloss on front doors it creates a handsome and commanding entrance, but becomes much more relaxed in feel in our Estate Eggshell finish. The bluer undertones of this dark hue transform rooms into dramatic and enveloping interior spaces.