White and purple can be matched with blue, you know

Quick answer：

This statement suggests that white and purple are complementary colors that can be harmoniously combined with blue. In color theory, complementary colors are pairs that, when mixed, produce a grayscale color, such as white or black. Blue is often considered a complementary color to orange, but in this context, it seems to be used to denote a color that can be mixed with white and purple to create a visually appealing combination.