Anyway... This time I painted in the center of our "color pick" to suggest all the lower chroma hues and where they would appear.
It's not geeky science-y perfect but it's not way off either. It's mixed on the fly from the palette, just as you would in a painting. That was the point of the redo: create a color wheel that corresponds to the actual act of painting In the second image I've superimposed two strips of mixed color to show they plot pretty true.
The vertical one is ultramarine + cadmium yellow pale. The diagonal one is ultramarine + cadmium red