1, blue, white and red collocation is the most beautiful visual effect, so many trademarks and national flags use this collocation. Blue and yellow are contrasting colors, and the contrasting colors are more eye-catching. However, in practical application, it will not be directly matched with solid colors, which makes people feel stiff. Generally, the matching of complementary colors or over-matched contrasting colors will give people a sense of relief, and there will be no feeling of visual jumping.

2, bright blue with red makes people look charming and handsome, but pay attention to the appropriate proportion of blue and red.

3. A nearly black and blue suit jacket with a white shirt and a bow tie will make people look mysterious and romantic when attending some formal occasions. A curvy blue coat with knee-length blue skirt and white shirt, white socks and white shoes will reveal a light and charming atmosphere.