Everything You Need to Know About Color Rendering Index (CRI)

When it comes to choosing the right light bulbs for your home, you need to know about the color rendering index (CRI). This measures how accurately a light source illuminates colors. The higher the CRI rating, the more accurate the colors will be. In this blog post, we will discuss what CRI is and how to choose the right light bulbs based on their CRI rating.

Color Rendering Index (CRI)

What is the color rendering index and what does it measure?

The color rendering index (CRI) is a measure of how accurately a light source illuminates colors. The higher the CRI rating, the more accurate the colors will be.

Light sources with a low CRI can make objects appear distorted or unnatural. For example, fluorescent lights often have a low CRI, which is why they can make skin tone appear sickly or greenish.

CRI is measured on a scale from 0 to 100. The higher the CRI, the more accurate the colors will be. Daylight has a perfect score of 100 and is used as a reference for other light sources.

The CRI (International Commission on Illumination) was founded in 1931 to evaluate the capabilities of light sources to represent color across a range of R1 to R8.

1. Color Rendering Index Chart

Color Rendering Index (CRI) is a scale from 0 to 100 percent that measures how accurate a “given” light source makes the color of an object appear to human eyes and whether colors are distorted in any way when illuminated by that light source. The higher the CRI, the better the color rendering ability of the light source.

In general, anything above 80 is considered good; 90+ is excellent, and anything below 50 should be avoided if possible as it will likely make colors appear distorted.

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Source: https://www.lumens.com/

2. CRI Testing

CRI testing requires specialized equipment. The light spectrum of a lamp is compared against eight different colors (or “R values”), known as R1 through R8, during this test. There are 15 measures shown below, but the CRI score only utilizes the first 8. Each color is given a score ranging from 0 to 100 based on how natural it appears in comparison to how it looks under a “perfect” or “reference” light source at the same color temperature as that lamp.

Equally important to finishes and hues are how people look in the space. High CRI values, particularly in R13 and R9 values, produce natural skin tones with more depth. A CRI value of 80+ will effectively portray colors and finishes. When the most accurate color rendering is essential, 90+ CRI values are recommended.

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Source: https://www.flexfireleds.com/

How can you use the color rendering index to choose the right light bulbs for your home or office space?

When choosing light bulbs for your home, you should look for ones with a high CRI rating. This will ensure that the colors in your home are accurately illuminated.

If you are looking for light bulbs to use in a space where accurate color rendering is essential, such as a kitchen or bathroom, you should look for bulbs with a CRI of 80 or higher.

For spaces where the most accurate color rendering is essential, such as a photography studio, you should look for light bulbs with a CRI of 90 or higher.

You can find the CRI rating of a light bulb on its packaging or on the manufacturer’s website.

What are some of the benefits of using light bulbs with a high color rendering index rating?

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There are many benefits of using light bulbs with a high CRI rating.

Some of these benefits include:

  • More accurate colors: Light bulbs with a high CRI will accurately illuminate the colors in your home, so you can be sure that what you see is what you get.
  • Natural skin tones: High CRI values, particularly in R13 and R19 values, produce natural skin tones with more depth.
  • Less eye strain: Light bulbs with a high CRI can reduce eye strain because they provide more accurate colors and less distortion.

Are there any drawbacks to using light bulbs with a high CRI rating?

One potential drawback of using light bulbs with a high CRI rating is that they can be more expensive than other types of light bulbs. However, the benefits of using high CRI light bulbs may outweigh the cost for some people.

Another potential drawback is that high CRI light bulbs may not be as energy-efficient as other types of light bulbs. However, there are many energy-efficient high CRI light bulbs available on the market today.

How do you find out the CRI rating of a particular light bulb model?

The CRI rating of a light bulb can be found on its packaging or on the manufacturer’s website.

When you are looking for light bulbs, be sure to check the CRI rating to ensure that you are getting the right light bulbs for your needs.

When looking at the CRI rating of a light bulb, you should also look at the R values to get a more complete picture of the light bulb’s performance. The R values range from R0, which is the darkest color, to R15, which is the lightest color. The higher the R-value the more accurate the color rendering.

To get the most accurate color rendering, you should look for light bulbs with a CRI of 80 or higher and R values of 13 or higher.

Light bulbs with a high CRI can be more expensive than other types of light bulbs, but the benefits may outweigh the cost for some people.

If you are looking for energy-efficient high CRI light bulbs, there are many options available on the market today.

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What should you consider when choosing light bulbs with a high CRI rating?

When choosing light bulbs with a high CRI rating, you should consider the cost, energy efficiency, and type of light bulb.

You should also consider the space where the light bulbs will be used and whether accurate color rendering is essential.

FAQ

Do LEDs have a high CRI?

Yes, LEDs can have a high CRI. In fact, some LEDs have a CRI of 90 or higher.

What is the difference between lumens and CRI?

Lumens measure the amount of light that a light bulb emits, while CRI measures the accuracy of the colors that a light bulb renders.

What is the difference between 80 and 90 CRI?

The difference between 80 CRI and 90 CRI is that light bulbs with a CRI of 90 will render colors more accurately than light bulbs with a CRI of 80. However, light bulbs with a CRI of 80 will still render colors accurately.

Conclusion

In conclusion, the color rendering index (CRI) is a measure of how accurately a light bulb renders colors. The higher the CRI, the more accurate the colors. Light bulbs with a high CRI can be more expensive than other types of light bulbs, but they offer many benefits, such as more accurate colors and less eye strain.

When choosing light bulbs with a high CRI rating, you should consider the cost, energy efficiency, and type of light bulb. You should also consider the space where the light bulbs will be used and whether accurate color rendering is essential.

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