A color's Light Reflectance Value (LRV) measures the amount of visible and usable light that reflects from (or absorbs into) a painted surface. What is LRV Anyway? LRV, or Light Reflectance Value, refers to how light or dark a paint colour will look on a scale of 0 (black). LRV Light Reflectance Value of Paint Colors. A 90 second tutorial about one of my favorite trade secrets - LRV,. What Does LRV Mean In Paint? | Light Reflectance Value | How to Pick Paint Colors Have you. What is LRV? LRV or light reflectance value refers to how light or how dark a paint color is and how much light a paint color reflects.