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Image Color Counter

Count the unique colours in an image and list the ten most common ones.

Count image colours

Status: choose an image to begin
Unique colours: —
Dominant colour: —
Sampled pixels: —
Pixels are sampled from a canvas downscale, so very large photos are counted quickly and locally.

How to use the Image Color Counter

  1. Choose a photo or graphic from your device.
  2. The tool samples the pixels and builds a full colour histogram.
  3. Read the unique colour count, the dominant shade and the top ten list.

Features

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Frequently Asked Questions

Common questions about the free online image color counter.

Choose a file and the tool samples its pixels on a canvas, counting each unique red, green and blue combination.
Large photos are downscaled to about 480 pixels on the long edge so the counting stays fast in the browser.
It is the single colour that covers the most sampled pixels, reported as a hexadecimal value with its share.
No. Pixels with an alpha value below eight are skipped so that transparent backgrounds do not skew the histogram.
No. Everything is measured from the canvas in your browser and no data is transmitted.
An eight bit per channel image can hold up to 16.7 million colours, but a typical photo uses far fewer distinct shades.
Yes. The top ten list gives hex values you can reuse in any design or CSS project.
Yes. The tool respects the alpha channel and simply leaves transparent pixels out of the tally.
Yes. The counter is fully responsive and works in the browser on phones, tablets and desktops.

Last updated: October 10, 2026