**The logo flag can use a white background**. The white background is simple and clean, which can highlight the theme and characteristics of the logo flag and enhance the visual effect. For example, Volkswagen's corporate flag stipulates that the color of the flag must be gray on a white background.

However, when making a logo banner, you need to pay attention to the overall design and typography, and choose appropriate fonts, colors, graphics and other elements to convey the brand's core values ??and characteristics. At the same time, factors such as the size, shape, and material of the flag must also be considered to ensure that it can be presented clearly and accurately in various occasions and environments.