Briefly describe the concept of brightness, purity and contrast between warm and cold colors?

Brightness, purity, and hue are the three elements of color, which are simultaneously and inseparable in specific applications, and must be considered at the same time.

1. Hue: Hue is the biggest feature of color, and it is the physiognomy of color, that is, the name of color. Such as red, orange, yellow, green, cyan, blue, purple, etc. Usually the hue ring is composed of 12 colors, 20 colors, 24 colors, 40 colors and other hues.

2. Purity: Purity refers to the purity and saturation of the color. It is also known as chroma, saturation, vividness, gray scale, etc.

Primary colors are of the highest purity. The higher the degree of purity, the purer the color; Conversely, the lower the color purity. When black, white, or other colors are added to a color, the purity changes.

The more other colors are added, the lower the purity. The human eye has a strong ability to perceive color purity, and for the sake of research convenience, a 14-step purity change is used in the American Monsell color stereotype. Pure red (5R) has the highest purity of grade 14, and black, white, and gray have the lowest purity, all of which are grade 0.

3. Brightness: Brightness refers to the brightness and shade of color, also known as luminosity.

There are two kinds of brightness of color: one is the brightness of the same hue, which will change differently due to the strength of the light source. The same hue is mixed with different proportions of black or white, and the lightness also changes.

The second case is that the brightness of the different hues is different, and each pure color has a relative lightness to it. The difference between black and white is often used as a reference in color. The American Monsell color system uses 11 grades, with black being 0 and white being 11.

Yellow has the highest brightness, blue-violet brightness is the lowest, and red and green have medium brightness. The change of brightness of the color will affect the reduction of purity, and the addition of white to a certain solid color will increase the brightness, and the addition of black will reduce the brightness, both of which will cause the purity of the hue to decrease.

To put it simply, the lower the brightness, the closer it is to black, and the higher the brightness, the closer it is to white, which can be understood as the higher the brightness, the more white is added.

Brightness, purity, and hue are the three elements of color. Brightness is the brightness of a color, also known as dark and light colors, through which people can see the various layers of the color. The so-called hue refers to the appearance of the color, and it is also the main basis for people to distinguish which color it belongs to.

Purity refers to whether a color is pure and how pure it is. Three elements, one indispensable.

Hue to determine which color family it belongs to:Through the expression of the appearance of a color, people can determine which color it belongs to. If it is difficult to judge the color mixture, you can also roughly determine which color system it belongs to.

Hue is the appearance of the color that people can see directly, and it is also the appearance that can be presented very easily.

Even people who don't know how to paint, through the depiction of colored pens, can directly present colors with a certain hue, so that people can easily judge the meaning of the color, for example, green refers to plants, red refers to the sun, and so on.

Two or more colors are reasonably matched to produce a unified and harmonious effect, which is called color harmony.

The harmony of the same color with the same hue, the harmony of colors with different brightness and purity. The method is to make it produce a step-by-step laughing acacia gradually, and form a contrast between strength and weakness, high and low in the change of brightness and purity, so as to make up for the monotony of the same tone and harmony.

The harmony of similar colors is the harmony of a certain type of color that is close to hue, such as red and orange, blue and violet, etc., which is called the harmony of similar colors. The harmony of similar colors mainly depends on the common colors between similar colors.

The harmony of contrasting colors is the harmony of certain colors with opposite hues or chromatic properties, such as red and green, yellow and violet, blue and orange.

The methods of blending are:

Choose one contrasting color to increase its purity or reduce the purity of another contrasting color;

Insert split colors (gold, silver, black, white, gray, etc.) between contrasting colors;

The treatment method of different areas and sizes of the two sides is adopted to achieve the harmony of hail in the comparison;

It is a similar color relationship between contrasting colors, which can also play a role in harmony;

Hue is the color of the sky, that is, the intuitive color, the most basic color.

Brightness refers to the brightness of the color or the depth of the loser, that is, the depth, the change of light and shade.

Purity refers to the simplicity of the color, high purity refers to those unblended colors, and the 3 primary colors are the colors with the highest purity.

Hue: The hue of a color is the biggest characteristic of a color, and the more components of the color, the less vivid the hue of the color.

Brightness: The brightness of a color refers to how bright a color is. Various colored objects produce the intensity of light and shade due to the difference in the amount of light they reflect. There are two cases of color brightness: one is the same hue with different brightness; The second is the different brightness of various colors.

Purity usually refers to the vividness of a color. From a scientific point of view, the vividness of a color depends on the singularity of the light emitted by that hue. Colors that can be distinguished by the human eye with monochromatic light characteristics have a certain degree of vividness.

Different hues not only differ in brightness, but also in purity.