Here’s another version
The poster in the image is the original source for the coke can op posted btw
…I was gonna say it took until it was shrunk down to the thumbnail to see red, but nope, it actually has red in it in the thumbnail.
Guess this is specific to how often you see cans of coca-cola?
Here, I put the image through a ditherer (only available colours are black, cyan, white). I don’t see any red at all now.
[edit}
Actually, that “red” is mostly just gray so I played myself here. Still, the luminosity must be closer to red before I detect it as red, white doesn’t do it.
Except that there is. Alright, maybe not exactly, but…
The whites that you see as white (in the other white parts which don’t seem red), are shifted like . Notice the reduced reds there.
The whites you see as red are shifted like . This one, I’d probably call yellow, but you get the point, reduced blues. There’s probably a better example pixel in there and I just haven’t found it.
The red pixels in the thumbnail, well, maybe JPEG downscaling? I can’t say, because I don’t know what downscaling algorithm is being used.
So the parts you see as white, are actually bluish white in a sea of blue (Cyan is just mixtures of blue and green in case of RGB) and the part you see as red, are reddish white, in a sea or blue.
Also, for those who don’t see red, don’t look straight at the image. Look at something near it, with the image in your peripheral vision and you’ll get what others are saying. But I guess that happened while you were reading the title.
Still red with no logo.