What's My JND? 0.0070. Can you beat it?

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

What's My JND?

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

@kev
https://www.keithcirkel.co.uk/whats-my-jnd/?r=BSkgKP_f-P9H

Really not sure if the limit is in the eye or in the phone screen...
Will try again with a color-balanced monitor - and the result will be worse, of course xD

What's My JND?

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