Scotch Blue is from the Colour by Nature palette, created in collaboration between Farrow & Ball and the Natural History Museum. It\'s the darkest blue in the Farrow & Ball palette and more intensely coloured than the blue-based black shade Railings, making for eye-catching woodwork or a deeply luxurious wall colour. Try it in Estate Emulsion for a particularly velvety feel.Exterior Eggshell brings long-lasting colour to outdoor spaces with a finish that remains flexible once dry, protecting wood and metal surfaces through changing weather. Added preservatives help to prevent the growth of algae and fungi, and the resin-rich formula resists flaking, peeling, and fading for up to six years. Providing it has been applied in accordance with Farrow & Ball Product Advice Sheets. Not suitable for use on exterior plastic surfaces or decking.