About RGB and CMYK color mode allocation in graphic design

The above friends spoke very well, but they all told you the basic knowledge and application scope of these two color modes. In the design, RGB terms are called colored light. It gives people a visual feeling through the principle of reflection. It is a 24-bit theory that can reach more than 16 million colors, but many excessive colors and highlights that people can't distinguish from so many colors will be lost when printing, so although the colors seen on the display are not as ideal as those on the screen after printing or spraying. It is because most inkjet printers

photo printers use the color mode of C M Y K, that is, four paint spray tubes give four colors for inkjet printing and comprehensively transfer the colors on the pictures. In advertising companies, 3.2-meter large inkjet printers are generally used. The reason why people can spray beautiful graphic advertisements with only four kinds of pigments, Of course, this is the contribution of the machine designer. One revelation to us is that the ever-changing colors can be given through the four basic colors. How do you set these four values in the design? Let me give a proposal. Now that the network is so developed, you can download a chromatogram to see if I remember correctly, there is still an e-book called "Chromatogram Manual for Designers" on the network, which gives

1, colors in four-color coordinates. You can slowly sum up the rules according to its changes, and slowly remember some special colors. For example, if I want yellow, how can I bring it out? Just look at the yellow one, and it must be that the Y value is very high and others are low. Then, write down the gradient yellow adjacent to it, and then find a color ring to look at the seven-color light. Colors with an included angle of 18 degrees are relatively called complementary colors. They are sworn enemies. If you have you, you have nothing to do with me. How to understand it? Summarize it according to your own situation, remember more regular exercises, and you will gradually get familiar with it. When you see a color, you should immediately reflect its approximate color value in your mind. I'll teach you a way: first, look at some colors carefully on the chromatogram, and roughly know how the color value is determined. Then, when you see a color after leaving the computer, you will think about what the color value of this color I see. When you have time, go to the computer and adjust your estimated color value to see if you can estimate it again. I believe you will gain a lot. In practical application, advertising companies, regardless of their size, will have their own chromatographic manuals, and customers will have their own plans when requesting design. Metropolis will provide you with color values, so there is no need to worry about not setting color values.

Go ahead, if you don't know how to continue asking about RGB screen colors, CMKY printing colors are much less than RGB and CMYK colors. Most of them are transitional colors and high-bright colors.

If you want to look good, you should look at your own design ideas. Reasonable use of limited colors to express. Limited ability can only provide so much. First of all, let's distinguish the difference between the two:

RGB is a kind of colored light, such as sunlight, the color of the display and so on. Its color gamut is wider than that of CMYK, so it can express many colors that CMYK can't.

CMYK is mainly used in printing, and its color consists of four channels. When printing, C, M, Y and K each produce a piece of film.

RGB color matching is mainly to adjust your own monitor, and it is best to have a long tube, and then adjust the monitor half an hour after booting.

1, determine the room light.

2. Adjust the contrast to the highest.

3. open ADOBE's color management in the control panel and follow the prompts step by step.

4. There is color management in all ADOBE software. Please choose the purpose of your design. Such as web pages, planes, etc. Generally, in Edit-Color Settings,

there is a test tube tool in PS. You only need to open the sample color in the PS interface and put it on it, and you will see the specific values of RGB and CMYK on this color in the information in the upper right corner. Record these values, and then you can set the corresponding correct color values with reference to these values.

Buy this standard printing chromatography, check it while doing it, and remember it when you use it too much. If you want to make an ideal color scheme, you need to practice more. You can watch more excellent works on the Internet. If you watch more and do more, you will feel naturally. First, let's distinguish the difference between the two:

RGB is a kind of color light, such as sunlight and the color of the display. Its color gamut is wider than that of CMYK, so it can express many colors that CMYK can't.

CMYK is mainly used in printing, and its color consists of four channels. When printing, C, M, Y and K each produce a piece of film.

RGB color matching is mainly to adjust your own monitor, and it is best to have a long tube, and then adjust the monitor half an hour after booting.

1, determine the room light.

2. Adjust the contrast to the highest.

3. open ADOBE's color management in the control panel and follow the prompts step by step.

4. There is color management in all ADOBE software. Please choose the purpose of your design. Such as web pages, planes, etc. Generally, in Edit-Color Settings,

there is a test tube tool in PS. You only need to open the sample color in the PS interface and put it on it, and you will see the specific values of RGB and CMYK on this color in the information in the upper right corner. Record these values, and then you can set the corresponding correct color values with reference to these values.

Buy this standard printing chromatography, check it while doing it, and remember it when you use it too much. If you want to make the ideal color matching, you should practice more. You can read more excellent works on the Internet. If you read more and do more, you will feel naturally. All the prints to be printed, such as: commercial one-sided advertisements on the cover of inkjet magazines, outdoor brand advertisements, etc., should use cmyk. rgb is an inaccurate screen color and can only be viewed for reference. From this color to that color, you can change by raising the color value. You should set the color value of cmyk specifically, and try all the colors yourself. See what you use for output. If you use inkjet printing or real printing, you usually use RGB color mode. If you use printing, you should use CMYK

In fact, it seems simple but not simple for color matching, especially if you want to adjust accurate colors.

In the first step, you should use a flat screen with high color accuracy. You should also ask a professional colorist to help you color your display. This is a very important one, and it should be coordinated with your output machine. < p It's many years' experience to color by feeling. Another easy way to get started is to buy a color tag card. Buy a color tag card. Enter the color value accurately. Then paste the color tag card for the output master to color.

That's all people can do. The rest depends on the color accuracy of your output machinery and equipment.

For color matching, you can try to use HSB to color matching. H indicates hue, S indicates saturation and B indicates hue.

hue: it is a solid color, that is, a single color that constitutes the visible spectrum. Red is at , green is at 12 and blue is at 24. It is basically a pie chart with full chromaticity in RGB mode.

saturation: indicates the purity of the color; when it is , it is the color mixture. White, black and other gray colors have no saturation. At the maximum saturation, each hue has the purest color light.

brightness: it is the bright reading of color. It is black when it is . Maximum brightness is the most vivid state of color.

first, you set SB to , and then adjust it to the hue you want in the H hue. Then adjust S and B to control the depth of this hue. Each mode has its own advantages and disadvantages, and it has its own applicable range, and it can be converted between modes.

RGB is the color mode of color light, and R stands for red G, green B stands for blue. Three colors are superimposed to form 16.7 million colors, that is, "true color", which is enough to reproduce the gorgeous world. Other colors are formed by the superposition of red, green and blue, so this mode is also called. All monitors, projection devices, televisions and many other devices depend on this mode.

in terms of editing images, RGB mode is the best color mode, which can provide a 24-bit color range. Both "true color" display. But it is not the best printing mode. Because the color provided by RGB mode exceeds the printing color range. If you print a picture with it, you will lose some brightness and bright colors. Because printing is in CMYK mode. The colors defined by CMYK are also much less than those defined by RGB.

CMYK mode: when the sun shines on an object, the object will absorb part of the light and reflect the remaining light. The reflected light is the color of the object we see, which is a fundamental difference from RGB mode. Not only do we use this subtractive mode when we look at the color of the object, but we also use this subtractive mode when printing on paper.-According to this subtractive mode, The CMYK mode suitable for printing has evolved.

CMYK mode represents the four ink colors used in printing, C represents cyan M represents magenta Y represents yellow K represents black, and art students all know that three tones can't be combined with real black, at most, it is brown, so K- black is introduced to strengthen the dark tone and deepen the dark color.

CMYK mode is the best printing mode. But don't use CMYK mode in editing. Although CMYK avoids color loss, its operation speed is slow. Even if it works in CMYK mode, PHOTOSHOP must convert CMYK into RGB mode for display. And three channels (RGB) are faster than four channels (CMYK) in how to operate. Also, since both the scanner and the screen are RGB devices, whenever you work in CMYK mode, there is always a process of converting RGB to CMYK.

Based on personal experience, it is recommended that you edit in RGB mode first, print in CMYK mode, and then convert it before printing, and then make necessary color correction, sharpening and modification ... In order to quickly preview the image display in CMYK mode without converting the mode, you can use CMYK preview(CMYK under the view menu.

in the actual operation of "commercial one-sided advertisement on the cover of inkjet magazines", customers usually provide you with color values, and you won't be asked to create original colors. Every advertising company, regardless of its size, draws color values for reference. Just remember r, g, b; The basic values of C, M, Y and K can be adjusted in the specific design, that is, the previous color palette of pigments and water is replaced by a monitor and a mouse.

:) What those friends above have said is in place. I just want to say that if you want to brighten or darken the color, or add or subtract the color, you can try to adjust it in harmony! If you want to change colors more accurately, you can adjust them in the room!

here are some of my opinions! Graphic design is to combine different basic graphics or images into different graphics or images on the plane according to certain rules. It is a space boundary created by enlarging, shrinking, deforming, dividing and deleting in a two-dimensional space, depicting various images.

Graphic design is widely used in propaganda, advertising, packaging and other media.

Note: Terms of graphic design: 1. Center: refers to the center point of the whole image, that is, the visual center point when people watch this image. Therefore, when designing an image, designers need to consider how to place the visual center of the image in an appropriate position. 2. Proportion: refers to the size and height relationship between parts, parts and all image or graphic elements. 3. Balance: refers to the balance between the distribution of the shape, size, volume, color and material of the image and the visual sense component. 4. Rhythm: This time-sensitive and dynamic word, used in plane composition design, refers to the sense of movement generated when the same element is repeated continuously. 5. Rhythm: Regularly changing graphic images or TINT are arranged in quantitative proportion or equal proportion, so that the images can have a musical and melodic visual experience. 5. Contrast: Put the image elements with great material or quantity contrast together, so that the image picture has both sharp contrast and overall unified visual sense. 6. Symmetry: The picture is divided into two equal parts. 7. Harmony: the expression of part and whole elements is coordinated with people's sense of consciousness.

Elements of graphic design: 1. Conceptual elements 2. Visual elements 3. Relational elements 4. Practical elements

Terms commonly used in graphic design: 1. Design 2. Structural drawing 3. Small sample 4. Large sample (original draft) 5. Final draft 6. Sample 7. Recognition

1.2 Basic knowledge of color in graphic design

1.

please remember this sentence: color is the general name of all kinds of colors, and color is the concrete image of color!

Second, the principle of color recognition:

1. Historical understanding: In 1666, Newton used Mitsubishi mirror to decompose sunlight into seven-color spectra. Normal natural light is a mixture of red, orange, yellow, green, cyan, blue and purple, and the distribution of seven-color light is in a certain order according to different wavelengths.

2. light source color and object color: the types of colors are divided into light source color and object color

light source color refers to the color of the light emitted by the light source, which directly stimulates people's visual nerve

object color refers to the light that cannot be emitted by itself, but passes through the reflection light source. Presented colors

3. Three primary colors:

Three primary colors of light source-[RED], [GREEN] and blue

Three primary colors of objects-[CYAN], [MAGENTA] and yellow

. RGB and CMYK color modes

RGB-three primary colors of color light --〉CMKY--- printing color

5. Other color modes:

LAB mode, Grayscale mode, Bitmap mode, Duotone mode and Indexed color mode

6. RGB mode is suitable for editing, and CMKY mode is suitable for printing finished products < P > 3. Knowledge of color:

1. Red is saturated, eye-catching and visually irritating, which can inspire people. Red symbolizes love, vitality, enthusiasm, enthusiasm, warmth and progress. Usually used as warning, danger, fire prevention and other signs. To convey the image and spirit of the enterprise.

2. orange: it has both red and yellow sunshine, which makes people feel happy, warm, healthy and harmonious. Usually used in industrial safety color, warning color, clothing,