Jinan logo design requires strong visual impact, bright colors, at least by a variety of material media limitations (color distortion, can be standard production), which determines that the logo color should be as few as possible, clear color.

　　综合分类，济南标志设计中常用的色彩有:红、绿、蓝、黄、黑、白(一般采用白色或轮廓法表现)。其他人则使用金、银和灰色。运用原理分析:红、黄、蓝三基色均为减淡色，一般用于印刷色彩，在早期的济南标识设计中，由于媒体种类较少，印刷媒体较多，所以被广泛使用。

　　Comprehensive classification, the most commonly used colors in Jinan logo design are: red, green, blue, yellow, black and white (usually expressed by white or contour method). Others use gold, silver and gray. Principle analysis: red, yellow and blue are all light colors. They are generally used for printing color. In the early design of Jinan logo, because of the small types of media and more printing media, they are widely used.

　　近年来，电视、互联网、灯箱等光学媒体广泛流行，原有的三基色体系逐渐转向红、绿、蓝“三基色”体系，这也是济南标识设计中常用的色彩。从理论上讲，无论是在减法还是加法中，除了黑白以外的任何颜色都可以由这三种原色的组合产生。在一定的光线条件下，除了黑白两色在视觉上，各种颜色都会以“灰度”出现，失去色彩。此时黑白在色彩系统中起着重要的作用，因为这被称为“补色”。此外，在实际应用中，有金、银二色性不能表现出来。金银色是属于色彩、材料添加光折射的效果产生的。它基本上代表金属。这在普通的光致变色合成中是不可能的。有几个行业由于行业的性质，较多的使用金银(性能材料多为金属或金属色)。比如汽车制造业。

　　In recent years, TV, Internet, light box and other optical media are widely popular. The original three-color system gradually turns to red, green and blue "three-color" system, which is also the most commonly used color in Jinan logo design. In theory, any color except black and white can be produced by the combination of the three primary colors, whether in subtraction or addition. Under certain light conditions, except for black and white color in vision, all kinds of colors will appear in "gray" and lose color. At this time, black and white play an important role in the color system, because it is called "complementary color". In addition, in practical application, the dichroism of gold and silver can not be shown. Gold and silver are produced by adding light refraction to colors and materials. It basically represents metal. This is not possible in ordinary photochromic synthesis. Because of the nature of the industry, several industries use more gold and silver (performance materials are mostly metal or metallic). For example, the automobile industry.

　　至于色彩属性，我觉得你说的是色彩的“情感表达”。我们来解释一下这是什么意思。红色，来自太阳的情感认知，血，火。一般表现为热情、冲劲、激情、向上。绿色，情感认知来自植物。一般表现为健康、活力、洁净、环保、自然。蓝色，来自天空的情感认知，水。它可以分为天蓝色范围和深蓝色范围。天蓝色代表清新、自在、开放，深蓝代表深沉、宁静、安宁。黄色，情感认知来自大地、土壤、晨曦和黄昏的阳光。一般表达热情、高贵、纯洁。黑色，从黑夜的情感识别，夜空。它庄严、凝重、深邃。此外，根据一般的使用规则，黑色多用于字体颜色。白色:纯洁、空间。(很少单独使用)金或银，通常用来表示高贵。灰色:用于鉴别各种配色，做配色或背景色使用。纯色的情感色彩，在不同的搭配时能产生各种变化，有时甚至会产生强烈的视觉冲击和情感逆转效果。

　　As for the color attribute, I think you are talking about the "emotional expression" of color. Let's explain what this means. Red, Emotional Cognition from the Sun, Blood, Fire. Generally expressed as enthusiasm, drive, passion, upward. Green, emotional recognition comes from plants. It is generally manifested in health, vitality, cleanliness, environmental protection and nature. Blue, emotional recognition from the sky, water. It can be divided into sky blue range and dark blue range. Sky blue stands for freshness, freedom and openness, while dark blue stands for deep, quiet and tranquil. Yellow, emotional recognition comes from the earth, soil, dawn and sunshine at dusk. General expression of enthusiasm, nobility, purity. Black, from the emotional recognition of the night, the night sky. It is solemn, dignified and profound. In addition, according to the general rules of use, black is mostly used for font color. White: Pure, space. (rarely used alone) gold or silver, usually used to denote nobility. Grey: Used to identify various color matching, color matching or background color. Pure color emotional color can produce various changes in different combinations, sometimes even produce strong visual impact and emotional reversal effect.

　　这需要在设计中长期体验。例如:饱和度、亮度的变化，都会产生一点变化。一般归纳，变“暗”，庄重内容增加。成为“光明”，活力增加。加入黄色，暖度增加，加入蓝色，冷度增加。此外，需要注意的是，在不同的和民族文化背景下，色彩的情感色彩有时是很不一样的，要谨慎对待。

　　This requires long-term experience in design. For example, changes in saturation and brightness will produce some changes. Generally, we should change the "dark" and increase the solemn content. Become "bright" and increase vitality. Add yellow, increase the warmth, add blue, increase the cold. In addition, it should be noted that in different countries and national and cultural backgrounds, the emotional color of color is sometimes very different and should be treated with caution.