Think you've got enough patience for an optical illusion?
The latest brainteaser to go viral is baffling the web as it shows a shade of blue you've probably never seen before.
It works by using a large red circle and small white dot to trick your mind into thinking there's a shade of cyan on there.
To be able to see the colour, you'd need to stare at the white dot in the centre for 30 seconds.
Next you should tightly shut your eyes and then you would see a glowing orb of "true cyan" when you open them.
Understandably the optical illusion will have confused you, so how does it work?
The "true cyan illusion" works by overwhelming the nerve cells in your eye responsible for decoding the colour red, reports MailOnline.
It happens when you open your eyes and the nerve cells overwhelmed kick in and show you an "afterimage".
In this case the colour red appears to be cyan.
The shade is one that cannot be produced on TVs, phones or computer monitors.
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Ophthalmologist Ajay Kuriyan told IFLScience: "If you stare at a colour for some time, the cone cells responding to that colour become refractory for a short period of time so the other colour cone cells become stimulated.
"This is the principle that drives the afterimage."
In other news, Reddit users were left baffled by this artist's "amazing" illusion on her body.
The piece of art created by Dain Yoo has an optical illusion which left many social media fans baffled when it was shared last week.
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