Understanding Colour Rendering Index in Lighting The Colour Rendering Index (CRI) is one of the most important measures in lighting design. It tells us how accurately a light source reveals the true colours of objects compared to natural light. Whether in retail, healthcare, photography, or everyday living, CRI directly impacts how we perceive spaces and …
How Colour Temperature Shapes Mood, Design and Function Colour temperature, measured in Kelvin (K), describes the visual warmth or coolness of a light source. A low Kelvin value, such as 2700K, emits a warm golden light similar to candlelight, while a high value, like 5000K or above, produces a cooler, daylight-like glow. Understanding this scale …