What colour is this dress? Tumblr photo could actually break the internet

The internet is tearing itself apart over the colour of a dress

What colour is this dress? It’s a question hundreds of thousands of social media users have been asking after a picture of it was posted online.

Some say it is white and gold, while others are adamant it is blue and black.

The picture was initially posted on Tumblr by Scottish singer Caitlin McNeill.

It was then posted on Buzzfeed, which quickly crashed under the amount of traffic it received.

“What happened was two of my close friends were actually getting married and the mother of the bride took a photo of the dress to send to her daughter,” Miss McNeill, who lives on the small island of Colonsay, said.

“When my friend showed the dress to her fiancee, they disagreed on the colour.”

Even Taylor Swift and Kim Kardashian got involved:

Then recent Oscar winner Julianne Moore jumped in:

Everyone then started picking teams

Then the jokes began

However, Adobe, the colour experts, also wrote on Twitter that, using their software, the dress is in fact black and blue.

After much speculation Amazon finally confirmed the dress is black and blue (and you can buy it for £50).

But why the disparity?

Light enters the eye through the lens—different wavelengths corresponding to different colours, according to Wired magazine. “The light hits the retina in the back of the eye where pigments fire up neural connections to the visual cortex, the part of the brain that processes those signals into an image.

“Critically, though, that first burst of light is made of whatever wavelengths are illuminating the world, reflecting off whatever you’re looking at. Without you having to worry about it, your brain figures out what colour light is bouncing off the thing your eyes are looking at, and essentially subtracts that colour from the 'real' colour of the object.”

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Watch: The science behind #TheDress