For a coastal beachy kitchen, a bold accent wall color can bring a sense of fun and playfulness to the space. Consider a vibrant turquoise or a sunny yellow to create a cheerful and lively atmosphere. The bold color will complement the white cabinetry and natural wood accents, evoking the feeling of being by the seaside. Whether you choose to paint the wall behind the breakfast nook or the area around the open shelves, the bold accent color will add a pop of personality and enhance the coastal aesthetic.