Most folks would disagree and say that blue is actually the least sensitive to changes and green the most, and allocate precision accordingly. See remarks here: https://en.m.wikipedia.org/wiki/High_color
sorry I misspoke by saying shades - the MacAdam's ellipses are
measured for the same brightness so only apply to variation in hue/saturation. So I think we can see more shades of green but more hues/saturations of blue?