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? 0.0066
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd/?r=ApQfKP_97_vA

My opinions are legally binding!

What's My JND?

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

@hp @keithamus
I got 0.0029 ... towards the end there seemed a mixture of pretty easy and downright impossible! 😂