This is neat

https://ismy.blue/

Is my blue your blue?

Test your color perception with this interactive test.

@jenbanim A lot will depend on your viewing device. Do you have blue reduction on? What's the room light colour balance? How old is your monitor? Is it calibrated correctly? How old are you? (Eye lenses yellow with age, blocking some blue light) Was the dress black and blue, or gold and white?

Still a fun experiment.