What is CRI in Lighting? – Its Levels and Importance | New Note [2024]

In this note, we are going to learn a topic called “What is CRI in lighting? and Its level & Importance. Welcome to Poly Notes Hub, a leading destination for engineering notes for diploma and degree engineering students.

Author Name: Arun Paul.

What is CRI in Lighting?

CRI, or Color Rendering Index, is a metric that measures a light source’s ability to precisely replicate the colors of diverse objects when compared to a natural light source, such as daylight. It is represented as a number on a scale of 0 to 100, with higher numbers signifying better color rendering.

Levels of CRI

Here we have listed color rendering index chart with value and examples –

Examples of Color Rendering Index

Here we have listed some practical examples of CRI levels in lighting system –

• High CRI lighting (90+) is ideal for applications that require precise color representation, such as graphic design, fashion, or food presentation.
• Medium CRI lighting (70-89) is appropriate for general lighting applications such as residential and workplace lighting.
• Low CRI lighting (below than 70) can distort colors and is commonly employed for certain applications such as street lighting or security lighting.