This project develops a bioinspired material platform that mimics the dynamic coloration of cephalopods through structural rather than pigmentary color. The system combines ellipsoidal block copolymer microparticles with a lamellar structure—engineered to scatter visible light—with thermoresponsive hydrogel matrices. Magnetic nanoparticles embedded in the microparticles enable remote, real-time color modulation via external fields. Temperature-sensitive hydrogels allow reversible sol-gel transitions, locking in or releasing the particles’ orientation to control visual appearance. The result is a dual-responsive material that exhibits vivid, tunable, and reversible structural color. Applications range from adaptive camouflage and anti-counterfeiting to soft robotics and sustainable alternatives to conventional dyes.