<p>This study introduces a novel triple encryption scheme for color images, leveraging a 12-dimensional hyperchaotic system to achieve an efficient and robust technique. The dynamic analysis of the suggested hyperchaotic system reveals that it meets all the essential standards. The sequences produced by this hyperchaotic system exhibit high randomness and unpredictability. The SHA3-512 algorithm is used to compute the hash value of the plain color image. The state variables of the hyperchaotic system are initialized using this hash value. This study proposes a triple encryption scheme utilizing a hyperchaotic system for securing color images. The triple encryption method is structured on a base encryption method. In base encryption method, the color planes of a plain image undergo a series of operations, including scrambling, mixing, XORing, splitting, and a Fibonacci Transform. The triple encryption method uses the encryption and decryption processes of the base encryption method, which has three steps: (i) encryption, (ii) decryption, and (iii) encryption. The suggested triple encryption technique applies a different key at each step. This multilayered procedure is more secure, robust and reliable. A comparative analysis with leading-edge methods shows that the proposed method significantly enhances security, underscoring its effectiveness and superiority in protecting color images. This method achieves an average entropy of 7.9994, a correlation coefficient close to zero (0.00111), highly plaintext sensitive where NPCR = 99.6092% and UACI = 33.4651%, and key sensitivity analysis gives NPCR = 99.6133% and UACI = 33.4668% . Moreover, the key size 512 bits confirms that the proposed scheme offers strong resistance against brute-force attacks.</p>