1. Depth basic primary color
1) All kinds of field color blocks, such as red, green, blue and other colors of the masthead word and logo pattern and do not need layers of deep basic color, general customers for these masthead word and logo pattern color, are strong and bright. Theoretically, it is to give full play to the maximum field density of offset printing ink to achieve maximum saturation. Although 95% of the dot will increase to 100% after printing, this is not the same as the effect produced by 100% field printing. 95% of the dot density only reaches the field in 95% of the dot area, and the increased 5% area although there is ink, but the ink density is thinner. 95% dot increase to 100% ink density is not 100% field density as thick, bright.
2) Blue sky, ocean, green leaves, lawn and other colors in landscape photography images, because in people's minds
Has formed a fixed concept, therefore, the color processing principle of the C version of the color quantity should be deepened on the basis of the color quantity needed in the hue, and green leaves, lawn and other green, Y version is also, so that the green saturation, bright. For the level of red, green, blue depth basic color, according to the general offset printing ink color bias, with gray characteristics, the best saturation configuration is:
Red =M95%+Y85%
Green =Y95%+C85%
Blue =C95%+M80%
3) The dot value configuration characteristics of the azure sky: first, 40% below the C color version does not put Y color, so that the sky is more beautiful; Second, more than 50% of the C color version of the Y color, so that the sky blue is not red, and make blue calm, thick. At the same time, because the sky blue ink is red now, so consciously fall light red, so that the blue sky is more beautiful.
4) The red leaves of Xiangshan in autumn can be treated a little redder than the actual red leaves. The basic depth color Y is 100%, M is 95%, and C is not placed, which makes the red leaves appear particularly gorgeous under the sunlight and gives people a pleasant sense of transparency.
The above changes in the pursuit of color break through the traditional method of color matching and highlight the aesthetic value of color in visual art.
2. Depth basic colors maintain layers
1) The dot level adjustment range of basic depth color is 65% to 90%. Because the dot size is larger than 80%, the level is easy to combine. Therefore, hierarchy of base colors is required for this area. On the premise of emphasizing the sufficient density of the field, the layers should be maintained, and the density saturation of the field should not be emphasized, resulting in the level of the basic color. Processing essentials: The depth of the basic color of the required level, the focus is on more than 80% of the area of the color amount for moderate lightening, so that it can be separated from the field color block, so that the printing can not only print enough field density, but also maintain the level.
2) In color processing, it is difficult to take into account the bright saturation of color and the light and shade level of color. If you want to preserve the light and shade level of color, it is necessary to use complementary color. If complementary color is used in Shenzhen packaging printing, the brightness of color will be reduced and the gray level will be increased. If you want to make the color, it is necessary to put less complementary colors, so that the level of light and shade in the color will be affected. For timeliness and packaging products, we should emphasize the color saturation and bright, affecting the light and shade level of some colors. This final printing image color sense is strong, good visual effect. The key is to master a "degree", and "degree" is the expression of the operator's aesthetic level, directly related to the effect of color art.
3) The layered texture of the basic depth color is mainly expressed by the main color plate, such as red, orange and other warm tones: it is expressed by the Y and M color plate; Such as green, cyan and other cool tones, by the C color version to show. Therefore, it is necessary to emphasize the layered texture of the main color version, so as to realistically show the characteristics of the physical layer.
4) The basic color in the middle zone is sufficient. The dot level range of the medium tone area is 35%-65%, which is the main part of most objects and the key area of color processing. To adjust the basic color of this region to the optimal saturation, the key is to the hue required on the basis of the amount of color. Then deepen about 5%, such as safflower, its light in the tone of the M color needs to be 40%, can be deepened processing for 45%, so that the red is more saturated and bright.