Why are shop signs and placards decorated with red and white at the same time this year?

Red and white font patterns are mostly used in commercial signboards, banners and slogans. This is actually a typical example of applying color to life, just like military camouflage. The combination of white characters with red background or scarlet letters with white background has the potential to attract business and attract people's attention. Red is the longest wavelength of all colors. When penetrating the air, the angle of refraction is the smallest, the straight line distance of the axis in the air is far, and the position of imaging on the retina is the deepest, giving the vision a sense of approximation, which is often said to be eye-catching, while white is the light containing all colors in the spectrum, and all colors can form a strong contrast color, which is the sense of prominence. For example, writing on yellow paper is the same distance as writing on white paper. White is much clearer than the words on yellow paper, which is why the background of vision test is white, which affects people's judgment. If color can be skillfully applied to life, many purposes can often be achieved. The combination of these two colors can be said to be the most perfect combination, which is why banners, slogans and signboards all adopt this model.