New ask Hacker News story: Ask HN: Why does this image look 3D?

Ask HN: Why does this image look 3D?
3 by LeoPanthera | 3 comments on Hacker News.
The image: https://twitter.com/mrbiffo/status/1516862012915167236 Mirror: https://ift.tt/gJaU1Q8 On my Mac's Dell LCD monitor, this image has a surprisingly intense 3D effect. The colored blocks appear to be floating in front of the blue and black background. On my iPhone, the effect doesn't work at all, and it appears completely flat. This is not simply a parallax or contextual effect - it feels as if I am looking at one of those lenticular 3D postcards. What's going on?

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