I’ve just started reading up on color theory, and so far I’ve learned that not all complementary colors are created equal. Many people seem to use the RYB or RGB color models for creating color schemes, but after reading https://blog.asmartbear.com/color-wheels.html (and similar articles), it strikes me that using a perceptual color model, such as the 4 primary color model suggested there, or Munsell, Lab et. al. would provide more useful color combinations based on color harmony theories (please correct me if I’ve not understood this correctly).
To provide a concrete example, with an RGB color wheel the complementary color of green is purple:
but with the model sugested in that article the complementary color of green is red:
I notice that the color circle in Gimp is RGB, so I wonder if anyone knows of some nice FLOSS software for creating color schemes using a perceptual color model?