Why are colors blue green and yellow?

The colors blue, green, and yellow are not inherently those colors. The colors we perceive are a result of the way our eyes and brains process light.

When light hits an object, some of the light is absorbed and some is reflected. The color of an object is determined by the wavelengths of light that are reflected.

Blue, green, and yellow are all colors in the visible spectrum of light. The visible spectrum is the range of wavelengths of light that humans can see. The visible spectrum ranges from 400 nm (violet) to 700 nm (red).

Blue light has a shorter wavelength than green light, which has a shorter wavelength than yellow light. This means that blue light waves are smaller than green light waves, which are smaller than yellow light waves.

When white light hits an object, the object absorbs some of the light and reflects the rest. The light that is reflected is the color that we see. If an object reflects blue light, we see it as blue. If an object reflects green light, we see it as green. If an object reflects yellow light, we see it as yellow.

The colors blue, green, and yellow are also important in the art world. These colors are often used to create contrast and emphasis in paintings and other works of art.