Hi. Please play this amazing JND color game my friend Keith made and see how good you/your displays are at differentiating between similar colors. https://www.keithcirkel.co.uk/whats-my-jnd/?r=filmgirl
Cheap, 10 year old whatever-monitor I have here. Out of three attempts, the best was 0.0054, which doesn't seem that impressive when seeing some of the other results.
I blame the monitor.

