The self-prioritization effect is a cognitive phenomenon indicating that individuals tend toprioritize information closely related to themselves when processing information. To investigate theimpact of black and white colors on this effect, researchers employed a perceptual matching paradigm.In Experiment 1, stimuli were presented in the same color for both shapes and labels to examine howthe black and white colors of stimuli affect the self-prioritization effect when shapes and labels sharefeatures. The results revealed that compared to white, the presentation of black significantly reduced thediscrimination of other-related information, thereby enhancing the self-prioritization effect, highlightingthe potential influence of color on the self-prioritization effect. To further explore this influence,Experiment 2, after strictly controlling for additional variables, focused on scenarios where only shapeswere presented in black and white, while other stimuli appeared in task-irrelevant colors. The resultsshowed that black and white colors only acted on geometric shapes and did not affect the processing ofself-related information. Through these two experiments, the study elucidated the regulatory mechanismof black and white colors on the processing priority of self-related information, providing a newperspective for understanding the complexity of the self-prioritization effect.