现在大多数印刷平面设计都使用电脑进行设计和制作。电脑的显示器呈色出R（红）、G（绿）、B（蓝）色光三原色以色光加色法呈色，色域较大；而印刷呈色是由C（青）、M（品）、Y（黄）三原色和K（黑色）四种色料以色料减色法呈色，色域较小。可见电脑呈色与印刷呈色原理不同、色域不同。
Nowadays, most printing graphic designs are designed and produced by computers. The computer display shows three primary colors of R (red), G (green) and B (blue), and the color is shown by color light plus color method, with a large color gamut; The printing color is composed of three primary colors of C (green), m (product), y (yellow) and K (black), which are presented by the color subtraction method, and the color gamut is small. It can be seen that computer color rendering and printing color rendering have different principles and color gamut.
印刷类平面设计制作的终输出目标是进行C、M、Y、K四色印刷，所以设计师应在设计制作过程中以印刷色标来定义、调整和控制颜色，唯有如此，作品的颜色外观才会有保证。如果是对图形和文字进行着色处理，为了使印刷时有准确的颜色外观，须在印刷色标册上选定需要的颜色，并用其相应的CMYK色值组合对图文对象进行设定。
The final output goal of printing graphic design and production is to carry out C, m, y and K four-color printing, so designers should define, adjust and control colors with printing color codes in the process of design and production. Only in this way can the color appearance of works be guaranteed. If you are coloring graphics and text, in order to have an accurate color appearance during printing, you must select the required color on the printing color code book and set the graphic object with its corresponding CMYK color value combination.
②原色与专色。这里所说的原色是指C、M、Y、K及其叠印色，又叫印刷色；专色是指印刷前预先混合而成的特定色油墨，如珍珠蓝、荧光黄等，它不是靠CMYK叠印出来的颜色。在设计时是用CMYK四色印刷还是专色印刷呢？
② Primary color and spot color. The primary colors mentioned here refer to C, m, y, K and their superimposed printing colors, also known as printing colors; Spot color refers to the specific color ink pre mixed before printing, such as pearl blue, fluorescent yellow, etc. it is not the color overprinted by CMYK. Is CMYK four-color printing or spot color printing used in the design?

一般情况下，我们尽量使用原色，避免使用专色，原因有两个方面：一是四色印刷可以组合出大部分的任意色，从而给设计师本人提供的设计自由；二是专色油墨多为进口油墨，高，在印刷时要专门制作一块印版，单由一个机组走纸一次来完成该色的印刷，会大大增加印刷费用。 可如果是简单的专色印刷，如报纸的套红标题等，其成本比四色印刷成本要低。
In general, we try our best to use primary colors and avoid spot colors for two reasons: first, four-color printing can combine most of any colors, so as to provide the designer with the greatest design freedom; Second, spot color inks are mostly imported inks with high prices. During printing, a printing plate should be specially made. Only one unit takes the paper once to complete the printing of this color, which will greatly increase the printing cost. But if it is a simple spot color printing, such as the red cover headline of a newspaper, its cost is lower than that of four-color printing.
以上的精彩内容来自：济南彩色设计印刷更多的精彩内容请点击进入我们的网站：https://www.sdhzyw.com，我们后续会有更多的内容为您
The above wonderful content comes from Jinan color design printing. For more wonderful content, please click to enter our website: https://www.sdhzyw.com , we will have more content for you later