Main image and background color matching methods

Quick answer：

The subject of main image and background color matching methods refers to the techniques and principles used in graphic design and web design to ensure that the main image and the background colors are harmonious and aesthetically pleasing. This can involve selecting complementary or contrasting colors, considering the color theory such as the color wheel, and ensuring readability and visual appeal. Key aspects include color harmony, contrast ratio, and the psychological impact of colors.