There's a few 'kinds' of red-green colorblind as I understand it. It has to do with whether you're missing a type of cone, or whether the frequency response of a cone type is shifted. I knew someone who had never experienced what others call "green" - all things supposed to be green are brown. I on the other hand see some green things, but a lot of things other people call green are brown, maroon or even purple. Pastels are the worst.

I have mild tritanomaly ("blue-yellow colorblindness"), which _directly_ affects blue vs green color discrimination, and I landed at 168, "greener than 85% of the population"

It gets complicated if the goal is perfect accuracy. Cone sensitivity also varies on an individual basis even for color-normal people. Worse, the transfer function of the eyeball also varies with age as your lens yellows and internal fluid clouds a bit. Even holding those constant, brains do a lot of processing that maps what your eyes can physically capture into perceived colors, which are significantly influenced by upbringing.

Plus, screens and ambient lighting. It's a lot of variables.

From the about:

"What happens when I hit submit?

When you hit submit, we store your responses anonymously so we can aggregate them later and measure aggregate naming curves. We don't store any information that would identify you personally. "