Can you tell how many colours are in this spiral? This optical illusion will leave your head spinning

By Litaletu Zidepa
24 May 2016

Can you tell what colours these spirals are?

Barely a week goes by week goes by without a new brainteaser sending the internet into a frenzy.

Read more: Can you see what’s inside the red dot? This optical illusion will test how good your sight is

In the latest optical illusion, a spiral appears to be showing green, blue and pink swirls.

But all is not as it seems.

In fact, this spiral only has one colour, just one.

You don’t believe it? Try zooming in.

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Read more: There’s something seriously weird about this picture – can you figure it out?

According to MailOnline, our brains mislead us to thinking that the spirals are different colours because of the Munker Illussion or the ‘whites effect’.

In simple words, we process colours based on what’s next to it. The contrast of the colours makes it difficult for our brains to see each colour individually.

This means that, rather than seeing the spirals in the illusion as the same colour shade, our eyes trick us into thinking that they are different.

Read more: Are you one of the few people who can see through this mind-boggling optical illusion?

This is the reason behind the spirals appearing to be showing blue and green when, in fact, they are all the same colour – green.

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Aimed at showing how your brain processes colour, the brain teaser was created by Psychology professor Akiyoshi Kitaoka from Japan who specialises in visual perception.

Sources: dailymail.co.uk, thesun.co.uk

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