<![CDATA[The modern construction industry confronts complex challenges that require the built environment to transcend mere structural compliance and actively promote psychological well-being, productivity, and human safety. This study explores the integration of color psychology as a fundamental element in the engineering of the built environment through a multidisciplinary approach encompassing Architecture, Civil Engineering (specifically Occupational Health and Safety/OHS), and Mechanical, Electrical, and Plumbing (MEP) engineering. Drawing upon a systematic literature review following the PRISMA guidelines for structured article identification and screening, and conceptual synthesis, the findings indicate that color operates as a crucial neurobiological catalyst. Within architecture, color modulates cognition, emotion, and thermal perception (examining the hue-heat hypothesis and thermal reflectance index). In civil engineering and OHS, standardized color coding elicits heuristic responses for instantaneous hazard mitigation on-site, specifically serving to minimize visual work fatigue. Furthermore, in MEP engineering, color is utilized as an ontological mapping system to navigate critical infrastructure; this is subsequently integrated with Building Information Modeling (BIM) to facilitate spatial conflict resolution. The synergy of these disciplines, further supported by Human-Centric Lighting (HCL), is proposed as a holistic framework for optimizing the building life cycle and ensuring worker safety.]]>
