If there's one thing that'll never get boring online, it's a good old optical illusion. From hidden messages in artworks to static objects that appear to be moving, we've seen all sorts of weird, wonderful and wacky examples over the past few months. Here's another.
The latest viral illusion claims to show you a colour you've never seen before (by which it means, a colour your monitor probably hasn't shown you before). Even the best 4K monitors are unable to display "true" cyan (a combination of red, green, and blue) and instead have to settle for a close approximation. But now, thanks to a smash hit TikTok video (below), over 21M people have seen the illusive shade. (For more mind-bending content, see our list of the internet's finest optical illusions.)
@kbacon You’ve probably never seen this color before... #womeninstem #voiceacting #science
♬ Blade Runner 2049 - Synthwave Goose