Add red and green together, you get yellow. Add green and blue together, you get cyan. Added blue and red together, you get magenta. Add different amounts, and you get different shades.

That's because, even though those colors exist, you've probably never seen them. Red-green and yellow-blue are the so-called "forbidden colors." Composed of pairs of hues whose light frequencies ...

Almost all TV remote controls have red, green, yellow, and blue buttons. However, most people are unaware of what these four colored buttons do. You've probably noticed that almost every remote, ...

So the sky isn’t blue, at least not always. It is a glow-in-the-dark night sky too, colored a mix of green, yellow, and red. Its colors result from scattered sunlight, oxygen, and sodium from ...

Animals produce a variety of red and yellow pigments that vary biochemically. Not so for blue. We normally see a bullfrog as green because of the structural blue plus the presence of a yellow pigment.

So the sky isn’t blue, at least not always. It is a glow-in-the-dark night sky too, coloured a mix of green, yellow and red. Its colours result from scattered sunlight, oxygen, and sodium from ...