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Reference Material - Colour Rendering Index

The Colour Rendering Index (CRI) is a measure of how faithfully a test light source can render a set of 15 defined colours when compared to a natural light source. The more balanced the rendering results are, the higher the CRI will be. If all test colours render equal to a tungsten halogen lamp the CRI would be 100.

A typical entertainment RGB led lighting fixture (Chroma-Q™ Color Block™) has a CRI of 67. The MSR575 lamp fitted into many of the professional entertainment moving lights have a CRI of 70. Such are the advances in control technology that the latest Chroma-Q RGBA fixture (Color Force™) has a CRI of 92.

CRI Test Colour Samples
Name Appr. Munsell Appearance under daylight Swatch
TCS01 7,5 R 6/4 Light greyish red Light greyish red swatch
TCS02 5 Y 6/4 Dark greyish yellow Dark greyish yellow swatch
TCS03 5 GY 6/8 Strong yellow green Strong yellow green swatch
TCS04 2,5 G 6/6 Moderate yellowish green Moderate yellowish green swatch
TCS05 10 BG 6/4 Light bluish green Light bluish green swatch
TCS06 5 PB 6/8 Light blue Light blue swatch
TCS07 2,5 P 6/8 Light violet Light violet swatch
TCS08 10 P 6/8 Light reddish purple Light reddish purple swatch
TCS09 4,5 R 4/13 Strong red Strong red swatch
TCS010 5 Y 8/10 Strong yellow Strong yellow swatch
TCS011 4,5 G 5/8 Strong green Strong green swatch
TCS012 3 PB 3/11 Strong blue Strong blue swatch
TCS013 5 YR 8/4 Light yellowish pink (skin) Light yellowish pink (skin) swatch
TCS014 5 GY 4/4 Moderate olive green (leaf) Moderate olive green (leaf)
TCS015 1 YR 6/4 Asian skin Asian skin swatch