Pigment subtractive refers to yellow, magenta, cyan three original color ( such as paint, ink ) subtractive color mixing principle content method. We in the incandescent lamp with a red transparent paper, light then collected into a red, as red transparent paper for white light with a color, in fact the opposite.

We know that only when the retina three color sensitive cell at the same time by equal and strong stimulation is only white felt, white is a color composite, red transparent paper absorption of white medium of other color only through a red light, give a person with the red feeling.

If the yellow instead of red transparent paper, not only through the shot through the red light, through green, make the retina are yellow cells and sense of green cells are stimulated simultaneously, thus having yellow feeling. Can say is Bai Guangzhong minus blue and the rest of red light and green and yellow. The white light ( or composite light ) minus one or several light and get another shade of the effect that hypochromic effect, namely pigment reduction method.

If the red, green, blue three filters stacked in a white light source, there is no light to pass through. Because the three-color filter to filter out the range of light wavelengths are different, that is not a filter can be transmitted through the other two filters can be transmitted through the light. But green, magenta and yellow for the same test, the situation is different.

Because each color filter through the spectrum of light in 2/3, if two two overlap in the same light source can produce other colors. Any two color mixed color by light is color one of the colors.

For example, the green color filter is subtracted from white light red, magenta filter minus green, when the two kinds of filters are stacked together, yellow and blue are subtracted, all the light to be subtracted.

Cyan, magenta and yellow pigment two two equal mixture, its fineness and filter fineness is similar.

For example, cyan pigment and yellow pigments are mixed to produce green, affection filter and yellow overlap also produces a green.

Subtractive color is the essence of pigments or other colored substances will be white light spectrum in certain light is selectively absorbed, resulting in a white light subtracting some shade effect, the human eye visual color Bai Guangzhong is less certain colors have left after the light. Is subtracted from the light and the remaining light complementary.

The subtractive method, illustrates the white is the color origin, all colors are included in the white inner.