We are taught the rainbow is composed of red, orange, yellow, green, blue and violet, and sometimes that there are invisible colors, infrared and ultraviolet, on either side. And we learn that ...

Beyond violet lies ultraviolet, and beyond red is infrared. These wavelengths are invisible to the human eye, yet they’re real and detectable with the right instruments.

For example, a red object appears "redder" on a green background than on a white background. In other words, neighboring colors can change how we perceive certain hues.

So a pure red object reflects red and absorbs other colors. While some systems work by amplifying small amounts of light, those don’t work in total darkness.

Hypnosis Hallucinated Colors Produce Real Color Afterimages Participants hypnotized to hallucinate red experienced blue-green afterimages. Posted March 30, 2022 | Reviewed by Vanessa Lancaster ...

Lifestyle The moon is not just gray, new images show: ‘Real color differences’ By Alex Mitchell Published Aug. 21, 2024, 2:12 p.m. ET ...