What's My JND?

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

@n1k0 en hard mode : What's My JND? 0.0095 (Hard Mode)
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd-hard/?r=A7UjKP___9D_
What's My JND? Hard Mode

Hard mode: find the odd square out of nine. No gradient hints, just raw colour perception.

@mageekguy What's My JND? 0.0058 (Hard Mode)
Can you beat it? https://www.keithcirkel.co.uk/whats-my-jnd-hard/?r=AkMlKP____-8

j'ai trouvé plus facile avec la grille de 9 comme ça

What's My JND? Hard Mode

Hard mode: find the odd square out of nine. No gradient hints, just raw colour perception.