Webpage stubborn Color Design Guide

Colors have superior effects that cannot be compared with other forms of presentation capabilities. In our life, color is everywhere. It is an important part of our life environment. We can say that our cognition of every thing begins with color and shape. We are also using color to create a rich visual space and communicate with society in color language. In daily life, people's responses to colors are regular. For this reason, people make every color rich with special emotional meanings.

Color Composition (Interaction of Colour), that is, the Interaction of colors, is based on the human perception of color and psychological effect, using scientific analysis, restores complex color phenomena to basic elements and uses colors in space. quantitative and Qualitative variability, according to certain rules to combine the relationship between the various components, and then create a new color effect process. Color composition is one of the basic theories of art design. It has an inseparable relationship with the plane composition and three-dimensional composition. Color cannot exist independently from the shape, space, location, area, texture, etc. As a web designer, only by mastering the color composition principle, familiar with the relationship between colors and the physiological or psychological effects of various colors, and combining their own plane composition knowledge, the correct use of color in web design can achieve the purpose of conveying specific information and rendering the page's country of mind

1. Light and color

Color is a visual effect produced by the stimulation of light. Color is the result of light perception.

In physics, light is part of an electromagnetic wave. Its wavelength ranges from 700 to 400mm. In this range, it is called visual light. When light is introduced into the prism, the light is divided into red, orange, yellow, green, blue, and purple, and thus the natural light is a mixture of seven colors. This phenomenon is called the decomposition or spectrum of light. The color distribution of the seven-color optical spectrum is arranged by the wavelength of light.

2. Object color

The object itself will not emit light. The reason why it can be seen is that the light source is reflected by the absorption and reflection of the object surface, reflecting the light color feeling in the vision.

Under natural light, an object only reflects the light of one of its wavelengths, while all the light of other wavelengths is absorbed, and this object shows the color of the reflected light. If an object reflects all the light, we will feel that the object is white. If we absorb all the seven colors, it will be black. In fact, the colors in our daily life are extremely rich. It is impossible for various objects to reflect only one wavelength of light. It can only reflect much light at a certain wavelength, light of Other wavelengths is reflected less in different proportions. Therefore, the color of an object cannot be an absolute standard color, but only a part that tends to a certain color and has other colors. Therefore, the color of an object is determined by the color of the light source and the ability to absorb and reflect the selected object.

3. Computer color display

We know that the color of an object is the result of color light reflection. So how do colors of computer monitors sometimes be generated?

Color displays produce colors in a way similar to the luminous bodies in nature. There is a video tube inside the display and television, when the electron gun in the video tube emits an electronic stream on the inside of the fluorescent screen phosphorus film. P-ray films produce luminous effects, thus precisely controlling the wavelength of light waves of each p-ray film, and then simulating various colors of light in nature after synthesis and superposition.

II. Primary colors

Colors that cannot be mixed with other colors are called primary colors. Other colors can be mixed with primary colors.

There are two primary colors, one of which is the three primary colors of light, as shown in Figure 3-2. The other is the pigment, that is, the three primary colors of the pigment.

Three primary colors: red-red. green-green. Blu-ray-blue

Three primary colors of pigments: magenta-magenta. yellow-yellow. cyan-cyan

1. Positive mixing of colors

Positive mixing refers to the mixture of color and light. When the sun light is introduced into the prism, the light is separated into red, orange, yellow, yellow, green, blue, and purple spectra. Similarly, we can mix the monochrome light into the color of other colors in the lab, and the following experimental results are obtained:

Red light + Green Light + blue violet light = White Light

Red + Green = Yellow

Red light + blue violet light = purple red light

We can see that the mixed features of the color light, the two colors or the multi-color light is very consistent, the new color light mixed out, the brightness increases, the brightness is the sum of the brightness of the mixed colors. The more colors the parameter is mixed. The colors of the new colors are higher. If all the colors are mixed together, the colors become extremely strong white. Therefore, we call this hybrid method a positive hybrid or an addition hybrid method.

On the color ring, the two colors of the mixed light are near, moderate, and distant. The new colors are the middle colors of the two colors. The purity of the new color light is high, the purity of the new color view is low, and the remaining colors are mixed. The mixed light is white, and the purity of the new color light disappears. The brightness of the new color is the sum of the brightness of the mixed color.

The color of a computer display is a combination of colors from the scales of the fluorescent screen. It can display millions of colors in a car, and its primary colors are red-red. green-green. blue-blue, so it is called the RGB mode.

2. Negative mixing of colors

Negative mixing refers to the mixing of pigments. The mixing of pigments is the phenomenon of reduced brightness. Therefore, it is called negative mixing or subtraction mixing. See Figure 3-3. Pigment. dyes. the properties of pigments such as coatings are different from those of the same color spectrum. They are compound colors of the object color. The color of the color material is the result of partially selecting and absorbing the color light in the white light, the reflected and the absorbed color light contains a different set of monochrome light. Therefore, the negative mixing between pigments is not the result of the color-light mixture of the reflection part, but the addition of light reduction caused by the mixing of some colors.

On the color ring, the two colors of the mixture are close to each other, and the results of the mixture are the middle colors of the two colors. When the two colors are closer to each other, the purity of the mixed colors is reduced. When the other colors are farther apart, the mixed colors are much reduced. If the two colors are the farthest complementary colors, the purity of the new colors disappears, and the brightness decreases to black and gray.

Therefore, to mix new colors with high purity, you must select a color that is closer to the color ring. For example, the green products mixed with yellow-green and blue-green must have a higher purity than the green products mixed with yellow and blue.</