attractive 9-square color scheme

Quick answer：

An attractive 9-square color scheme refers to a visually appealing arrangement of colors in a 3x3 grid. It is often used in design, art, and graphic design to create a balanced and harmonious composition. The key is to choose colors that complement each other and create a pleasing visual experience. This can be achieved through the use of color theory principles such as complementary colors, analogous colors, and color harmony.