I've got some students who noticed that Illustrator and Photoshop display completely different colors on screen for eactly the same RGB values despite Color Settings being synchronized.
CSF: North American Web/Internet (RGB color space = sRGB),
Proof Set-up: Internet Standard sRGB
Proof Colors turned On.
RGB Values: R=0 G= 162 B=211
But colors displayed are not close between Ai and Ps.
With Proof Colors turned off, both apps display the colors reasonably closely.
I teach Photoshop and Print Color Management, so I admit my knowledge of how Illustrator handles screen proofing and proof set-ups for screen destinations is not comprehensive.
I expect I'm missing some difference in the two apps' behaviour.
Any info from anyone experienced in this corner of the field appreciated.