光影与色彩作为油画艺术的核心表现要素，其相互关系能深刻塑造作品视觉魅力。研究采用理论分析方法，从光影 色彩的调节机理入手，系统探讨其对油画视觉表现力的影响机制。结果表明，光影色彩关系通过空间深度营造、画面节奏控 制、情感氛围传达以及视觉冲击强度四个维度影响油画的视觉表现效果，其中，光源处理技法的强化、明暗布局的优化、色 彩温度的调控以及对比关系的精确平衡是提升画面视觉表现力的关键途径。光影色彩关系的科学运用能够显著增强油画作品 的艺术感染力与审美价值。

As the core expressive elements of oil painting, the interplay between light, shadow, and color profoundly shapes a work's visual appeal. This study employs theoretical analysis to systematically explore how these elements influence the visual expressiveness of oil paintings through their regulatory mechanisms. The findings reveal that light-shade-color relationships impact oil paintings' visual effects through four dimensions: spatial depth creation, rhythmic composition control, emotional atmosphere transmission, and visual impact intensity. Key approaches to optimizing visual expressiveness include enhancing light source techniques, refining chiaroscuro arrangements, adjusting color temperature, and achieving precise balance in contrast relationships. The scientific application of light-shade-color relationships significantly enhances the artistic impact and aesthetic value of oil paintings.