What Is CRI in Lighting? Why It Matters More Than You Think
CRI, or Colour Rendering Index, is a measure of how accurately a light source shows the true colours of objects compared to natural daylight. It's rated on a scale from 0 to 100 — the higher the number, the more true-to-life colours appear. A CRI of 90 or above is considered excellent and is recommended for homes, while cheap lighting often sits at 70–80, making colours look dull, washed out, or slightly off. CRI matters because it decides whether your home actually looks the way it was designed to. Most people obsess over brightness and colour temperature when choosing lights, and completely ignore CRI — which is often the reason a beautifully designed room still looks flat and lifeless. This guide explains what CRI is, what a good value looks like, why it matters more than most specs, and how to choose lighting that shows your home at its best. Who Is This Guide For? Homeowners choosing lighting for a new home or renovation who want their interiors, artwork, and finishes to...