![]() ![]() So, when a yellow and magenta paint are mixed, the yellow cancels out the "blue" reflectance in the magenta, and the magenta cancels out the "green" reflectance in the yellow. A magenta paint reflects significant amounts of "blue" and "red" light, stimulating the B and R cones, but not the G cones. Here are two examples:Īs we learned above in additive color mixing, a yellow paint reflects significant amounts of "green" and "red" light, stimulating the G and R cones in the eye, but not the B cones. Thus, the only wavelengths of light that can be reflected by the mixture are those wavelengths that both substances reflected before they were mixed. When we physically mix pigments, dyes or inks, we combine their light-absorbing behavior: Each absorbs (subtracts) light that would normally be reflected by the other. The key principle of subtractive color mixing is that it occurs outside the eye and brain. Subtractive color mixing describes the process of producing colors by mixing light-absorbing substances. Subtractive color mixing, or what's left? Additive colors always get lighter when mixed. ![]() So for example, when red light and green light are combined, the brain perceives the resulting light as yellow. The key principle of additive color mixing is this: The eye adds together the different wavelengths of the light it receives, and it is this total light sensation that the mind interprets as a color. This is because, by varying the amount of red, green and blue light in a combination, all of the colors in the visible spectrum can be produced. However, red, green and blue are considered the additive "primary" colors of the color spectrum. White light contains the full spectrum of colors – red, orange, yellow, green, blue and violet. Additive color mixing, or let there be light! The eye receives the reflected wavelength of light and the brain interprets it as a color. An object doesn't "have" color rather, its surface reflects a certain wavelength of light and absorbs all the others. A look at how color is produced through different mixing processes, including additive, subtractive and optical.Ĭolor is so elemental that it's hard to believe it's not an intrinsic property of an object. ![]()
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