There isn’t a specific wavelength for the color “brown” (non-spectral color), unlike the primary spectral colors such as red (between 620 to 750nm), green (520 to 570nm) or blue (450 to 495nm).
What we perceive as brown will often been a combination of red and orange (590 to 620nm) wavelengths with a reduced intensity. On an non-HDR monitor, which uses RGB pixels with 255-levels of intensity, it could be represented as R=77, G=27, B=00. Grouped tightly enough, this combination of red and green wavelengths will provide a perception of the color we call “brown”.
Grouped tightly enough, this combination of red and green wavelengths will provide a perception of the color we call “brown”
If you defined “brown,” you’d have to do it that way - by describing the wavelengths that we perceived as that color. The fact that your phone screen - a technology that works by emitting light - can display brown means there’s light that we call “brown.” It may happen that is really a dark orange, in much the same way that pink is a light red, but so what? It’s light and we see it as brown. Brown light.
There isn’t a specific wavelength for the color “brown” (non-spectral color), unlike the primary spectral colors such as red (between 620 to 750nm), green (520 to 570nm) or blue (450 to 495nm).
What we perceive as brown will often been a combination of red and orange (590 to 620nm) wavelengths with a reduced intensity. On an non-HDR monitor, which uses RGB pixels with 255-levels of intensity, it could be represented as R=77, G=27, B=00. Grouped tightly enough, this combination of red and green wavelengths will provide a perception of the color we call “brown”.
If you defined “brown,” you’d have to do it that way - by describing the wavelengths that we perceived as that color. The fact that your phone screen - a technology that works by emitting light - can display brown means there’s light that we call “brown.” It may happen that is really a dark orange, in much the same way that pink is a light red, but so what? It’s light and we see it as brown. Brown light.