Farrow & Ball London Clay 244A warm and charming brown, London Clay is loaded with magenta pigment for a rich, earthy hue that creates the most charismatic and elegant of rooms. So named because it is a deeper accent to London Stone, consider using this dark brown in a hall or transitional area to make the rooms coming off it feel much lighter and brighter. London Clay is also the perfect accent for both Elephant's Breath and Charleston Gray.