@tiar
Pigmento does have CMY and RYB mode for the wheels HUE (hue ring) and GAM (gamut mask). Not to mention RYB sliders and a mixer. It also does colour harmony in both modes, also colour harmonies are independant of any panel.
The controls are a bit original because of it but I think they make sense in the end. It was made pondering alot of color harmony tutorials of traditional artists and current colour wheels in the digital world with colour harmonies.