Color illusions, funny, yes but... What's next ?

[Anarkhya]

It's not the first time I encounter these color illusions, and to my knowledge I'm not subject to color vision deficiency (and I hope my monitor isn't either). But what's different this time is that I'm wondering what to do with these illusions, can they be used in pixel art, maybe they could serve a purpose (other than being an illusion to avoid), well, that's it, I'm just wondering...

Oh, example, of course:

[ptoing]

Of course you can use them. Artists have used this kinda stuff for ages in all kinds of art.

Here is one by illke


The green accents in the trees is actually a pure grey. It only looks green because the surrounding colours are reddish. Complementary contrast.

Also the fact that colours look different around other colours is one of the main things you need to work with in low colour pixelart.

[Crow]

The colors marked in your example are different

[ptoing]

Haha, they are actually quite different when put next to each other.

[Anarkhya]

@crow:
By different you mean different when using the eyedropper, right ? (because if not, if your eyes see them as clearly different colors then we have a color calibration issue and I'd like to know if the issue is on my side or on your side )

@ptoing:
So, one possible usage would be to spare colors for low palettes, using a grey as a green when surrounded by reds, makes sense, got it.

[ptoing]

If you do not see the difference here then something is either wrong with your eyes or your monitor.

[Crow]

It's an illusion if they look the same but are not, or if they don't look the same but they are. Neither is the case here.