Color, as an important visual language in film and television art, not only has the functions of decoration and expression of meaning, but also plays an irreplaceable narrative role in character shaping. Based on the theory of color psychological effects and in combination with specific film cases, this article systematically analyzes the three major narrative functions of color in the shaping of film and television characters: defining character identities, externalizing character inner thoughts, and depicting character personalities. It further explored how the psychological effect of color influences the audience's empathy for the characters, their perception of their positions, and their memory of their personalities. Taking "Amélie Poulain" as an example, this paper analyzes the psychological narrative strategies and effects of color in specific films. Research shows that color, through its associative and symbolic meanings, has become a key narrative tool with deep psychological influence in the shaping of characters in film and television.