Unbelievable optical illusion proves our eyes can't always be trusted

Traffic lights
(Image credit: KTSDesign/SCIENCEPHOTOLIBRARY via Getty)

We see plenty of optical illusions here at Creative Bloq, and the best examples prove that our eyes – and brains – can't always be trusted. And one of TikTok's most popular illusion pedlars has just shared perhaps the most deceptive we've seen.

Did you know that red can't pass through a cyan filter? Well try telling your eyes that, because when they look at this set of traffic lights with cyan overlaid on top of it, they're pretty much guaranteed to see the top light as red. Spoiler alert: it's actually grey. Like all the best optical illusions, we still can't quite accept what we're seeing here.


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Daniel John
Senior News Editor

Daniel John is Senior News Editor at Creative Bloq. He reports on the worlds of art, design, branding and lifestyle tech (which often translates to tech made by Apple). He joined in 2020 after working in copywriting and digital marketing with brands including ITV, NBC, Channel 4 and more.