Real Color Tuner is a picture setting that adjusts colors on the TV to look more natural and closer to real life.
It fine-tunes skin tones, landscapes, and objects so they don’t look too dull or too exaggerated.
For example, when watching wildlife on the Maasai Mara, the green grass will look rich but still realistic, and animal fur will have natural shades instead of looking artificial.
See also: Color Calibration, Wide Color Gamut, Quantum Dot.