Color Meter - RGB HSL CMYK RYB

In-app purchases
131 reviews
Content rating
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About this app

Color Meter is an innovative new app that provides more accurate color measurements by utilizing a white reference to compensate for varying lighting conditions, thereby enhancing precision.

The app measures colors in real time by using the camera of the device and can be used as a live color picker or color grabber / detector.

Whether you are an artist, designer, decorator, photographer or just interested in colors, Color Meter is here to assist you.

The Power of the White Paper Reference
What sets Color Meter apart from other apps is its ingenious use of a white paper reference. By compensating for the color and intensity of the ambient light, Color Meter ensures that the color measurements are more precise and reliable. It is like having a professional meter in your pocket.

How to Use the App?
To use the app you need a white surface such as a white paper. Hold the white paper to the left of the color you would like measure. Direct the camera of your device so that the paper is filling up the left rectangle in the app and the color to be measured is filling up the right rectangle in the app.
To get correct results you need to make sure that the same light is falling on both the white paper and the color to be measured. Avoid any shadows on the paper and on the color measured. This is more important that usually expected. The app will automatically warn you for several problems - such as when a white surface is not present. When the warnings are gone, the app will automatically and continuously measure the color.

What color spaces are supported?
Color Meter currently supports RGB, RGB in Hex format, Hue/Saturation based color spaces HSL, HSI, HSB and HSP as well as CIELAB, OKLAB, XYZ, YUV and the subtractive color models CMYK and RYB. The two latest mostly used for paint and dye.
Are you missing any color space? Let me know at and I try to add it.
You can see them all at once or click on the ones you are most interested in for an enlarged view and graphical representation of them.

The app uses a kind of automatic live calibration where it constantly uses the white reference to compensate for any changes in the light.

How Accurate are the Measurements?
A number of issues makes it hard to measure colors exactly with a smartphone.
The largest errors will appear if the light falling on the paper and on the color you measure are not identical. This can happen if your device or your hand is shadowing the light or if the light got reflected on the hands or any other nearby objects that are not white. The effect of these lightning circumstances are much larger than one might expect.
Another important factor is the quality of the light. Preferably use natural daylight (such as from a window) when measuring. Any artificial light, such as the light from an LED, does not have a perfect color rendering index (CRI) and that will result in the app giving slightly different results using different artificial lights.
Generally low intensity light (ie when it is too dark) will also give less accurate measurements.
However, these problems are effectively eliminated when the app is used for comparison measurements. In other words, when the app is used in the same lightning conditions on the same smartphone device, two measurements on different colors can be compared with typically only small errors in the measurement.

Please send any feedback, ideas or improvement suggestions on the application me at

Download the Color Meter now and try it out for free!
Updated on
May 21, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

128 reviews
Ken Laberteaux
February 11, 2024
Perfection, and exactly what I needed! This tool allows you to measure the exact color, in multiple formats (RGB values, HEX, etc). While it is not required, I found the option of a white reference to be ideal! This means that you can add a white piece of paper, or similar, into the frame, and identify it as white. That way, the program can determine if there are any color biases in the light, and can effectively "subtract" that bias color in the light from the color you are measuring.
7 people found this review helpful
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Calvin Lai
December 4, 2023
Pretty cool to see the detected RGB numbers change while I fiddle with my cheap LED strip. I'd gladly pay one time for pro version, but not sorry I don't have a need for yet another subscription in my life.
3 people found this review helpful
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December 4, 2023
Thank you so much for your 5-star review Calvin! There is actually a lifetime option available for you. Please check it out if you like. Thanks again and if you have any suggestions or questions please feel free to write to me at
l l
May 4, 2024
Need package lifetime deal for all apps included for like $10
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May 5, 2024
Thanks for your review and your interest in buying all my apps! Currently I have no bundle will all my apps, as I have yet no good technical solution for this. But if you send an email to me at I can solve this manually for you. Thank you! BR, Björn

What's new

• Added the often requested possibility to reorder and hide color spaces!