Card design pattern color coordination

Quick answer：

Card design pattern color coordination refers to the selection and combination of colors in the design of a card, which includes business cards, greeting cards, and other types of cards. The key principles include color harmony, color psychology, and cultural factors. Color harmony involves matching colors that complement each other, while color psychology considers the emotions and perceptions associated with different colors. Cultural factors are important in understanding which color combinations are appropriate for different occasions and audiences.