I'm gonna be that guy and point out that there is no way the population stat is accurate when color reproduction on screens varies so much. (I got a similar 87%)

This is a hard test because most of the colours presented don't look green or blue, is like a perfect blend, and hard to answer

I might be colour blind

Anytime color perception comes up, it's good to point colorblind isn't a lack of colors...

It's just different colors:

Red-green color blindness is caused by an unusual form of a light receptor in the eye, which is sensitive to a different range of colors than normal. This variant type of receptor makes it harder to distinguish among red, orange, yellow, and green. The resulting shift in color perception bestows extra sensitivity to other hues, however, as the researchers demonstrated by asking subjects to rate the similarity of 15 circles painted in tones of khaki. People with regular vision struggled with the test, while color-blind men aced it. The findings lend credence to the theory that people with red-green color blindness make good hunters or soldiers because they are not easily fooled by camouflage. The researchers hypothesize that the variant form of receptor could be an evolutionary relic from the time when early humans needed to spot predators or food hidden in branches and leaves.

https://www.discovermagazine.com/in-combat-stick-with-the-color-blind-15907

People who suck at red/green, are the ones that never understand why all the different colored khakis were always mixed together on the rack.

People just always assume what they perceive, is what every one else does too.

Why isn't there a “this is turquoise” option?

Or the possibility of marking it as both green and blue? (Or neither, whatever floats your boat.)

RGB #00FFFF is objectively as green as it is blue (well, in my screen the midpoint at which I'd be more likely to call it green seems to be at or around #00FFF5 ± 5, but that's probably due to the screen being imperfect)... it makes no sense to call it (or sufficiently close hues) one or the other...

Is your green my blue?

And my green your blue, too?

Could it be we have differing views?

Did it twice. 174 and 175, so consistent at least

I got 177, 176, then 184, so I figured I'd go one more time and got 176 again (then 179 because 5 is a nice number)

Then I tried on my phone which is currently lowest brightness and thought for sure I'd get different results than my computer monitor. 179, 177, and 176

I got 175, but oddly when I look at the final result it's off. If I had been asked to pick the dividing line when I can see all hues at once it would have been more to the right. My strategy was if I could see any hint of green, so by themselves some of the ones near 175 looked blue, but then pick up the green cast when they're near another green.

I tested again, slower, and still got 176.