Various embodiments include apparatuses enabling a single color-tuning device to select both a correlated color temperature (CCT) and a distance to the black body line (BBL) in a color-tuning application. In one embodiment, a color-tuning device includes a slider to divide an applied voltage to provide a signal related to at least one of CCT and Duv from the black body line. A finite-state machine is coupled to the color-tuning device to determine a subsequent action to take based on both a current position and a previous position of the slider. A lamp is coupled to the color-tuning device and has a desaturated red (R) LED, a desaturated green (G) LED; and a desaturated blue (B) LED; each of the at least one desaturated R LED, the desaturated G LED; and the desaturated B LED having coordinates on a chromaticity diagram that are in proximity to the black body line.