Red, orange, yellow ... The problem with purple is that it isn’t supposed to be possible to create a color from wavelengths on opposite ends of the spectrum. The shortest wavelength detection ...

Described as a kind of blue-green, the new color—named “olo”—can only be seen using lasers to manipulate certain ...

Take, for example, the traffic lights, or danger signs, which are red in color. It's a deliberate choice because the wavelength of red color is the highest in the color spectrum, and as a result ...