Red and blue portrait clash color

Quick answer：

Red and blue portrait clash color refers to a photography technique where the subject is captured against a background that contrasts with their clothing, typically using red and blue hues. This technique is used to create a striking visual effect, highlighting the subject's features and the vibrant colors. It is often used in fashion photography and portraitures to make the subject stand out. The term 'clash color' implies a deliberate choice of colors that are not complementary, resulting in a high-contrast, eye-catching image.