What is the slogan of the class emblem design? 1, class number: a circle was invented for the class to symbolize the class. 2. Main color: the contrast between class number and text, also called class number color. 3. Subtitle: Customize the slogan for the class number and design the class name. 4, class training: class training is the content needed by the class meeting, but also an indispensable part, a catchy slogan can make people remember deeply and easily enter the heart.