The dynamic color control of solid-state electrochromic (EC) devices has sparked broad interest in both academia and industry. In this work, we report a combination of an optical stack of a Bragg reflector and Fabry–Pérot cavity into a solid-state EC device that achieves high brightness and saturation. The Bragg reflector and Fabry–Pérot optical stacks are designed as multi-color selectors through dynamically varying the optical constants (n and k) of the EC layer, allowing selective reflection of different wavelengths. By employing EC-inactive mixed-tungsten-vanadium oxide as the counter electrode, high reflectivity and contrast can be ensured. The demonstrated combination of the Bragg reflector and Fabry–Pérot cavity into a solid-state EC device offers a practical approach to designing and fabricating high-performance reflective EC devices.