>> Your boundary is at hue 177, bluer than 76% of the population. For you, turquoise is green.

Not really sure how to interpret this. Where is "normal" on the curve?

It seems to me there is a broad range of "normal", as in well within the standard spec sheet tolerances for humans. It is more about what is average or median.

The About section at the end said most people average around 175.