> The bright red isn't just brighter, it's "redder than red" You probably already know this, but there is such a thing as "the reddest red." A single wavelengt

> The bright red isn't just brighter, it's "redder than red" You probably already know this, but there is such a thing as "the reddest red." A single wavelength of light is fully chromatic. As you mention, most color spaces use a "less red red," because it's easier to produce. Some color spaces do use impossible primaries in order to capture more area but, as the name suggests, they are unphysical. https://en.wikipedia.org/wiki/ProPhoto_RGB_color_space https://en.wikipedia.org/wiki/ProPhoto_RGB_color_space Supersaturated colors do somewhat exist, but these rely on human visual oddities. https://en.wikipedia.org/wiki/Impossible_color https://en.wikipedia.org/wiki/Impossible_color