For those who want to test their perception of colour, I made a little game called "What's My JND"

https://www.keithcirkel.co.uk/whats-my-jnd/?r=ARUjKP__-ve-

What's My JND?

Find your Just Noticeable Difference in colour perception. How small a colour difference can you actually see?

@keithamus What's My JND? 0.0038
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd/?r=AXgfKP___DbL

I guess me being a graphics programmer pays off. Though at some point the dust on my monitor has more contrast than the colors :D

What's My JND?

Find your Just Noticeable Difference in colour perception. How small a colour difference can you actually see?

@lisyarus @keithamus I found that when the response flashed at me it was like a glare stain and took forever for my eyes to try and adjust (it’s nighttime here). I have glare sensitivity and have to wear shaded lenses even indoors depending on the light. I did ok, I think, for an old lady.