For most of us, the first time we would have learned about indigo would have been in school, when we were taught color theory and the acronym for the colors of the rainbow: ROYGBIV. Of course ...

While violet hits your eye with a specific wavelength, purple only exists in your perception — a clever construct built from ...

Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

Of his rainbow experiment Newton wrote that he had projected ... In his diagrams, which showed how colors corresponded to notes, Newton introduced two colors—orange and indigo—corresponding to half ...

In an innovative discovery that defied centuries of colour theory, scientists revealed that purple isn’t a real colour at all—but a clever illusion created by the brain. According to new research, ...

Scientists have detailed the one popular color that doesn't 'exist' and the strange reason why we still see it.

When this happens, light becomes separated into a rainbow of colors—red, orange, yellow, green, blue, indigo (blue-violet), and violet. In this activity, you can make your own rainbow.

There are seven colours in the rainbow. They are red, orange, yellow, green, blue, indigo and violet. Grab your coloured pencils, felt tips or paints and colour in the rainbow to help you remember ...