1. light source color: The light emitted by various light sources (standard light source: 1, incandescent lamp 2, sunlight 3, blue sky sunlight when there is sun) is called light source color because of the different length, intensity and proportion of light waves. For example, the light of ordinary light bulbs contains more yellow and orange wavelengths and presents a yellow taste, while the light of blue wavelengths contained in ordinary fluorescent lamps presents a blue taste. Then, the light emitted from the light source takes on various colors due to the intensity of some wavelength light contained in it. The color of the light source is the color of the light source shining on the white smooth and opaque object. Except that the spectrum of sunlight is continuous (balanced), it is difficult for light in daily life to have a complete spectral color, and these light source colors reflect the complementary colors of the missing colors in the spectral color. Conditions for detecting the color of light source: the illuminated object should be white, opaque and smooth.

2. Traditionally, the sum of the color effects of an object under white light is called intrinsic color. Strictly speaking, intrinsic color refers to the color that shows the intrinsic properties of an object under a constant light source. Inherent color is the inherent color of the object itself. Grasping the inherent color is mainly to accurately grasp the hue of the object. Because the inherent color occupies the largest area in an object, it is very important to study it. Generally speaking, the most obvious place where an object presents its inherent color is the middle part between the light receiving surface and the backlight surface, that is, the gray part in the sketch tone, which we call halftone or intermediate color. Because in this range, the object is less affected by the color of external conditions, and its change is mainly the change of lightness and hue itself, and its saturation is often the highest.

3. Environmental color: refers to the environmental color under sunlight. The color of an object is a mixture of light source, environment and its own color. Therefore, when studying the color of the object surface, we must consider the environmental color and light source color. Environmental color is very important in photography conception composition, film and television works creation, decoration design, hotel catering and entertainment industry. When designing, we must consider the color of light source, environment and object. The colors of natural objects are completely different from those in these environments. For example, in photography, if we don't consider the environmental color, people's face color may be cyan or khaki (morbid feeling). If we put food in red and purple environment, the color may be terrible or affect people's appetite. Ambient color: after the surface of an object is illuminated, it can not only absorb a certain amount of light, but also reflect it to the surrounding objects. Particularly smooth materials are highly reflective. In addition, it is more obvious in the dark. The existence and change of environmental colors strengthen the color echo and connection between pictures, and can skillfully show the texture of objects. It also greatly enriches the colors in the picture. Therefore, the application and control of environmental color is very important in painting.

The three primary colors are composed of three basic primary colors. Primary colors refer to "basic colors" that cannot be obtained by mixing other colors. Other new colors can be mixed with different proportions of primary colors. If the mathematical vector space is used to explain the color system, then the primary colors can be used as a set of basis vectors in the space and can be combined into a "color space". Because human eyes have photoreceptors of three different colors, the color space we see can usually be represented by three basic colors, which are called "three primary colors". Generally speaking, the three primary colors of superposition type are red, green and blue, and the three primary colors of subtraction type are magenta, yellow and cyan. Tricolor is also an episode in the animation of Digital Baby 3, and there is also a digital art training institution called Tricolor in Beijing.

5. Complementary color is also called complementary color, and complementary color is also called intensity colorimetric, that is, two colors (equal amount) are black and gray after mixing, so these two colors must be complementary to each other. The opposite color of any diameter of the color circle is called complementary color. In the color circle, not only red and black are complementary colors, but all colors within 90 diagonal, such as yellow-green, green and cyan, are complementary colors with red.

6. The color attribute is omitted

7. Hue is the primary feature of color and the most accurate standard to distinguish different colors. In fact, any color except black, white and gray has the property of hue, and hue is composed of primary color, intermediate color and composite color. Tone, the qualitative appearance that color can present. Different colors in nature are infinitely rich, such as purplish red, silver gray and orange yellow. Hue is the appearance title of various colors.

8. Brightness is the perception of the light source and the surface of the object by the eyes, which is mainly a visual experience determined by the intensity of light. Brightness not only determines the illumination degree of the object, but also determines the reflection coefficient of the surface of the object. If the light we see comes from a light source, then the brightness depends on the intensity of the light source. If we see the light reflected from the surface of an object, the brightness depends on the intensity of the illumination source and the reflection coefficient of the surface of the object. Simply put, lightness can be simply understood as the brightness of color. Different colors have different lightness. For example, yellow is brighter than blue. How to arrange color blocks with different lightness in a painting is also helpful to express the feelings of the painting. If the sky is lower than the ground, there will be a sense of oppression. Any color has a change of light and shade. Among them, yellow has the highest brightness, purple has the lowest brightness, and green, red, blue and orange have similar brightness, which is medium brightness. In addition, the lightness of the same tone also changes. For example, from light to dark green, there are brightness changes such as pink green, light green and emerald green.

9. Purity usually refers to the brightness of a color. From a scientific point of view, the brightness of a color depends on the single degree of light emitted by this hue. All colors with monochromatic light characteristics that can be distinguished by human eyes have a certain vividness. Different shades not only have different lightness, but also have different purity. In addition, chemical reagents are also divided into purity.

10. Tone refers to the overall tendency of colors in a painting, which is a great color effect. In nature, we often see such a phenomenon: objects of different colors are either shrouded in a golden sunshine or a pale blue moonlight, like veil mist; Or covered by the charming golden color of autumn; Or unified in the silvery white world in winter. This color phenomenon is hue, which covers a certain color on objects with different colors, so that objects with different colors have the same color tendency.