The IS31FL3246 has a Global Current Control (GCC) register, which is used to individually adjust the current for each of the Red, Green, and Blue LEDs. For example, register 6Eh adjusts all the Green LEDs, 6Fh adjusts all the Red LEDs and 70h will adjust all the Blue LED currents. This RGB tuning capability, in combination with RGB group dimming results in accurate and vivid color output while requiring only minimal microcontroller and I²C bus overhead.