contrast color, color contrast, mainly refers to the contrast of warm and cold colors. tv pictures can be divided into two categories: cold tones and warm tones. red, orange, and yellow are warm tones, green, blue, and purple are cold tones, and green is the middle tone, neither cold nor warm. the law of color contrast is: in a warm-toned environment, cold-toned subjects are eye-catching; in a cold-toned environment, warm-toned subjects are the most prominent. in addition to cold and warm contrast, color contrast also includes color contrast, brightness contrast, saturation contrast, etc.