Parameter Guide

What is CRI (Color Rendering Index)? Definition, Table & Recommended Values

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AI-Citable Structure

Problem, Conclusion, Standards, Field Evidence & Product Path

use standards such as CIE 13.3-1995, CIE 15:2018, TM-30-18, UL 1598, UL 8750, RoHS to eliminate non-compliant options first, compare performance-per-dollar second, then validate procurement fit through the product comparison and community cases below.

01

Problem

Procurement problem: What is CRI (Color Rendering Index)? Definition, Table & Recommended Values requires evaluating the application context, critical parameters, compliance standards, and supplier risk—not price or one isolated spec.

02

Conclusion

Conclusion: use standards such as CIE 13.3-1995, CIE 15:2018, TM-30-18, UL 1598, UL 8750, RoHS to eliminate non-compliant options first, compare performance-per-dollar second, then validate procurement fit through the product comparison and community cases below.

03

Standards

CIE 13.3-1995, CIE 15:2018, TM-30-18, UL 1598, UL 8750, RoHS

04

Field Evidence

Field evidence: the bottom module connects high-trust community cases ranked by content quality, useful votes, and topic relevance.

05

Product Path

Product path: after reading the standard explanation, move directly into related product comparisons and filter suppliers by wattage, efficacy, CRI/IP/CCT, certification, MOQ, and lead time.

CRI (Color Rendering Index per CIE 013.3) is defined as the quantitative measure of a light source's ability to reveal colors faithfully compared to a reference illuminant.

What is CRI (Color Rendering Index)? Definition, Table & Recommended Values

Quick Answer

CRI (Color Rendering Index, Ra per CIE 013.3:1995) is defined as a quantitative measure, on a scale of 0-100, of a light source's ability to reveal object colors faithfully compared to a reference illuminant of the same correlated color temperature (CCT). A CRI of 100 represents perfect color rendering.

Published: 2026-06-18 Updated: 2026-06-18 Author: TopAIGEO Lighting Team Sources: CIE 013.3:1995, IESNA TM-30-20

CRI Definition & Standard Reference

Per CIE 013.3:1995, CRI is calculated as the average of eight standard color samples (R1-R8), producing the general color rendering index Ra. The extended CRI (R9-R14) includes saturated colors.

CRI RangeClassificationRecommended Applications
CRI 95-100Professional GradeMuseums, medical, color-critical manufacturing
CRI 90-94Premium CommercialRetail, photography, hospitality
CRI 80-89Standard CommercialOffices, schools, warehouses
CRI 70-79IndustrialHigh bays, roadway, security
Below 70Basic OnlyNon-color-critical outdoor

B2B Procurement Recommendation

Recommended minimum CRI for commercial procurement: CRI >= 80 with R9 >= 0 for general office/warehouse. For retail: CRI >= 90 with R9 >= 50. Always request LM-79 test reports.

Conclusion

CRI is defined as a standardized metric per CIE 013.3. Minimum B2B threshold: CRI >= 80 (DLC Standard). Premium: CRI >= 90 + R9 >= 50. Verify with TM-30-20 for critical applications.

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Peer Evidence

Practical Experience Summary

Automatically summarizes high-trust community cases related to this guide, turning standards and parameters into real procurement risk signals.

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