Why can the three primary colors of color and light be synthesized into white, but the three primary

1. The color is different.

The three primary colors are: red, green, and blue.

The three primary colors of the pigment are: yellow (yellow), magenta (magenta), and cyan (cyan).

2. The principle of color is different.

The three primary colors of color and light are the principle of additive color.

The three primary colors of pigments are the principle of subtractive color.

3. The application is different.

The three primary colors of color and light are widely used in products that actively emit light such as televisions and monitors.

The three primary colors of pigments are widely used in various passive luminescent occasions.

One of the three primary colors of color and light is the principle of additive color, and the other of the three primary colors of pigment (pigment) is the principle of subtractive color;

You can simply understand that all optical applications (i.e., objects emit light on their own) use the principle of additive color, and all those that need to present color by reflected light (i.e., objects that do not emit light by themselves) use the principle of subtractive color. Different situations are suitable for different primary color models.

The principle of additive color: the human eye recognizes colors according to the wavelength of the light they see. Most of the colors in the visible spectrum can be made up of a mixture of three basic colors in different proportions, and the colors of these three basic colors are red, green, and blue.

When these three types of light are mixed in the same proportion and reach a certain intensity, they appear white (white light); If the intensity of all three types of light is zero, it is black (darkness). This is the additive color principle, which is widely used in TVs, monitors and other products that actively emit light.

Pigment (pigment) three primary colors - subtractive color principle: in printing, printing, painting, painting and other passive light by the reflection of the medium surface, the color presented by the object is the remaining part of the light source after being absorbed by the pigment, so the principle of its color is called the principle of subtractive color method. The principle of subtractive color is widely used in various passive luminescence occasions.

The three primary pigments in the principle of subtractive color are cyan, magenta, and yellow.

The biggest difference between the three primary colors of color and the three primary colors of color is that the green in the three primary colors becomes yellow in the three primary colors. The main reason for this difference is that the color of light is projected directly onto the fundus of the human eye, while the color of the pigment is reflected by the corresponding spectrum of the pigment substance to the fundus of the human eye.

Each color has a certain wavelength, and the more these different wavelengths are superimposed, the brighter the light projected into our eyes will be, and the closer its color will be to white. The color of pigments is reflected by a substance with a fixed wavelength of light into our eyes, while other wavelengths of light are absorbed by the substance. If different colors of pigment substances are mixed together, then it absorbs more and more color light, and the light reflected to our eyes will become darker and darker, and the color we see will be closer to black.

Like the red, green, and blue in the three primary colors, it belongs to the darker spectral colors that we can see, and other visible colors are superimposed by these three colors, and yellow is second only to white light in its brightness in color light. But it is a pure color in the reflective color (i.e., the color of the pigment substance) and absorbs the narrowest spectrum, so that it can reflect only the bright color of white.

The three primary colors of color and light and the three primary colors of pigment are two different color models, which have different theoretical bases and application scenarios, so they also have different characteristics and differences.

First of all, the three primary colors of color and light refer to the three basic colors of red, green, and blue, which are the basic colors of additive color mixing. Other colors can be obtained by the additive mixing of these three colors, for example, the mixture of red and green can get yellow, the mixture of green and blue can get cyan, and the mixture of red and blue can get purple. It is widely used in television, photography, LED display and other fields.

The three primary colors of pigments refer to the three colors of cyan, yellow, and magenta, which are the basic colors of subtractive color mixing. Mixing the pigments of these three colors will result in black because a part of the light is absorbed and not reflected back. The three primary colors of the modified pigments are often used in painting, ink, and printing.

Secondly, the color of the three primary colors of chroma is achieved by emitting light from luminous bodies, so their colors are pure and highly saturated. The color of the pigment primary color is presented by absorbing certain wavelengths of light, so the color is not as pure as the color and light primary color, and the saturation is relatively low.

In addition, the color matching methods of the three primary colors of color and light and the three primary colors of pigment are also different. In additive color mixing, adding more color will cause the color to become lighter because the added color will reduce the saturation of the original color. In subtractive color mixing, mixing more colors will make the color darker because the mixed colors can absorb more light.

To sum up, the chromatic and light primary colors and the pigment primary colors are two color systems that are realized through different mechanisms. Colors are represented and available differently and need to be selected and applied in different scenarios. <>

The three primary colors of light are red, green, and blue.

The three primary colors of pigments are red, yellow, and blue.