Abstract: In this study, RGB based image encryption was proposed. Initially the RGB components are separated, to each plane logistic mapping was employed. Then permutation was done for number of iterations given by the user and then the bitplanes are combined form a single image. Circular shift operation was performed on either left/right then up/down of the permuted pixels. As a final module, bitwise operation are applied based on two keys for row and column, respectively. To analyse the robustness of the proposed method correlation values, Unified Average Changing Intensity (UACI), Number of Pixels Change Rate (NPCR) and histogram tests were estimated.