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10 Facts You Probably, Absolutely Don't Know About The Colour Blue

Blue is the best colour [full stop].

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2. Ancient peoples may not have been able to see the colour blue.

Homer famously describes the ocean as being "wine-dark" in The Odyssey. That text has led to an intense study as to whether ancient people could see the colour blue at all or if they simply had no word to describe it.

3. In Japan, traffic goes when the light turns "blue."

The traditional Japanese "青" — what we might translate as "blue" — is sometimes used to describe "go" traffic lights in Japan, which are on a green spectrum. In addition to traffic lights, "青" can be used to describe other things that fall somewhere between a simple "blue" or "green" description, such as "blue apples," "blue lawns," or "blue leaves."

4. Water only looks blue because it absorbs red, yellow, and orange light waves.

We see color based on what light waves are being reflected off an object. Generally, we see red tones first, then yellow, but we can only see blue tones if the red and yellow light waves have been absorbed by the object we're looking at.

8. Some offices are designed around the colour blue because it can make people more productive.

A University of Texas study showed that the colour of an office space can affect the emotions of its workforce. The colour blue inspired more productivity then any other colour.

10. Blue is one of the rarest colours you'll see in the natural world.

Chlorophyll in plants primarily absorbs blue and red wavelengths, reflecting green ones, and in general, compounds in nature that reflect blue light are much rarer, as the process requires more energy.

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