Coastal interior design channels the relaxed, breezy feel of the seaside. Begin with a soft color palette of whites, sand tones, and light blues to reflect the natural elements of ocean and sky. Incorporate organic textures like jute rugs, weathered woods, rattan accents, and linen fabrics for a beachy, laid-back look. Furniture should feel comfortable and unpretentious, with a mix of slipcovered seating, open shelving, and natural finishes. Light is essential—maximize natural light and use sheer curtains to maintain openness. Coastal interiors often feature nautical decor, seashell accents, and ocean-inspired artwork, all while keeping the vibe light, airy, and serene.