The color ratio of 108u

Quick answer：

The term '108u' typically refers to a specific type of colorant or pigment used in various industries such as printing, plastics, and paints. To provide an accurate color ratio, more context or details about the specific application or the color standard being referred to would be needed. In general, a color ratio describes the proportions of different color components (e.g., red, blue, yellow) required to achieve a particular shade or hue.