However, we never see colours like black, white or grey in rainbows. According to a report published in Science Report, "but there are two colours we would never see in a rainbow - black and white.

Why doesn’t the rainbow have colours like black, brown and grey in it? – Ivy, aged four, Kent, UK. Many of us have seen rainbows in the sky once the sun starts shining again after a spell of rain.

But actually, black is a color, as well as white — they are achromatic colors, meaning those lacking chroma (a level of vividness or mutedness, similar to saturation) and hue (the general family ...

When light is refracted by raindrops it separates the white light out into the visible spectrum, meaning it is no longer white. Grey is a mix of black and white, and as we can’t ever see black and ...