Blue and red VI design diagram

Quick answer：

A 'VI design diagram' typically refers to a visual identity system design, which includes the use of colors such as blue and red. This system is designed to ensure consistency in branding across various media. The blue and red colors could be used to convey different emotions or themes, with blue often representing calmness and professionalism, while red can symbolize energy and passion. In a design context, the VI diagram would show how these colors are applied consistently in logos, typography, and other graphic elements.