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naomai/php-dominantcolor
========================

Find dominant colors in an image using K-means clustering

035

Since Jun 12Pushed 5y agoCompare

[ Source](https://github.com/teraxis/php-dominantcolor)[ Packagist](https://packagist.org/packages/naomai/php-dominantcolor)[ RSS](/packages/naomai-php-dominantcolor/feed)WikiDiscussions master Synced 2d ago

READMEChangelogDependenciesVersions (1)Used By (0)

PHP Dominant Color library
==========================

[](#php-dominant-color-library)

This library extracts dominant colors from images - those, which are most likely to attract the viewer's eyes.

[![Album arts example](example/albums.jpg)](example/albums.jpg)

The library uses [K-means clustering](https://en.wikipedia.org/wiki/K-means_clustering) method to group image pixels into different *color bins*. Those colors are then evaluated by their saturation and differences between others. Two of them are picked as *most prominent* (primary and secondary).

Usage
-----

[](#usage)

We want to find most prominent colors with three additional colors from image `heart.png`.

```
$imageSrc = "heart.png";
$totalNumberOfColors = 5; // primary + secondary + 3 additional

$colorInfo = Naomai\DominantColor::fromFile($imageSrc, $totalNumberOfColors);
```

Number of colors is the number of *color bins*, it also should include primary and secondary colors.

The result is an array of following structure:

```
$colorInfo = [
	'primary' => 0xDEFDEF,
	'secondary' => 0xABCABC,
	'palette' => [
		0 => ['color' => 0xABCABC, 'score' => 0.8],
		/// etc
	]
```

All colors are formatted as standard RGB integer in form: `0xRRGGBB`. `palette` contains additional colors. The `score` field is a score from secondary color choosing algorithm. The chosen secondary color has value of `1.0`.

See **examples** directory for a visual demonstration.

This project relies on the elegant [PHP K-Means](https://github.com/bdelespierre/php-kmeans/) library by Benjamin Delespierre.

###  Health Score

18

—

LowBetter than 8% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity7

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity33

Early-stage or recently created project

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

### Community

Maintainers

![](https://www.gravatar.com/avatar/faf6851bddee09660e595be5b693c814910456af1ef616449e3e3eeed7ead880?d=identicon)[teraxis](/maintainers/teraxis)

---

Top Contributors

[![naomai](https://avatars.githubusercontent.com/u/9076785?v=4)](https://github.com/naomai "naomai (3 commits)")

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