Three things it does fast: ground bright blue, sharpen linen, wake living room. The wall stops being background. A room full of white paint and pale wood suddenly reads as a choice rather than a default, and the blue picks up whatever daylight you have. Hang it where people gather and look up above a low sofa, over a console in a hallway, or on the wall a stair turn faces. Keep the company simple: white or off-white walls, pale timber, cane, striped cotton, plain white ceramics. What not to do is crowd it with other loud colour. Dark heavy oak, deep red textiles and busy patterned wallpaper all fight the water. On premium fine-art paper, the brushmarks and white sailcloth stay crisp and bright.