ALLYX ONE
100% browser-based · zero uploads

Color Palette Generator

Extract a color palette from any image for free — no sign-up, no uploads, nothing to install. Drop in a photo and get the dominant HEX, RGB, and HSL color codes in seconds. Everything runs right in your browser, so your images never leave your device.

Drop an image here, or click to browse

JPG, PNG, WebP, GIF — up to 50 MB

How It Works

This free online color palette generator reads your image entirely in your browser — no file is ever sent to a server.

  1. 1. Choose your image

    Drag and drop any JPG, PNG, WebP, or GIF onto the upload area, or click to browse your device. The image loads instantly into the tool — nothing leaves your computer.

  2. 2. Pick how many colors you need

    Choose between 4 and 12 dominant colors. A smaller number gives you the absolute standout colors; a larger number captures more subtle tones and gradients.

  3. 3. Palette extracted in your browser

    The tool reads the raw pixel data using the Canvas getImageData() API, then applies a median-cut quantization algorithm to find the most representative colors. The whole process takes a fraction of a second, with no upload progress bar, no waiting — just an instant result.

  4. 4. Copy codes or download your palette

    Click any color swatch to copy its HEX code straight to your clipboard. Download the full palette as a PNG image for use in mockups or presentations, or as a JSON file for pasting directly into your design system or codebase.

Why users love this tool

  • Your images never leave your device — everything is processed in your browser, not on our servers, so there is nothing to intercept or store.
  • Results in seconds — because there is no upload step, color extraction is instant even on large images.
  • Designer-ready exports — download a PNG swatch sheet or a JSON file with all color values to drop straight into Figma, code, or a style guide.
  • Works on any device — phone, tablet, or desktop, no installation required.
  • Completely free — no account, no watermarks, no limits.

How It Works: Secure Client-Side Color Extraction

Most online color pickers upload your image to a remote server for processing. Our tool uses edge-computing principles to extract colors directly within your own web browser.

HTML5 Canvas API

When you select an image, the tool creates an in-memory HTMLCanvasElement and draws the image onto it using drawImage(). It then calls getImageData() to retrieve the raw RGBA pixel array — never transmitting any data to a server.

Median-Cut Color Quantization

The pixel array is partitioned using the median-cut algorithm: the color space is split repeatedly along the channel with the greatest range (red, green, or blue), and each resulting bucket is averaged to produce a single representative color. This produces perceptually balanced palettes with minimal color repetition.

Privacy & Speed

  • No data transmission — the quantization logic runs entirely in JavaScript. Your original image stays in your device's RAM and is discarded when you close the tab.
  • Instant export — palettes are exported as Blob URLs generated locally by the browser. Downloads require no server round-trip.
  • Resource efficiency — by offloading the work to the client, the tool stays 100% free and fast even during peak traffic.

Frequently Asked Questions

Is my image uploaded to a server?

No. All color extraction happens locally in your browser using the HTML5 Canvas API. Your image is never sent to or stored on any server.

Is this color palette generator free?

Yes, completely free. No account required, no watermarks, and no hidden charges.

What color formats does it give me?

Each color is shown as a HEX code, an RGB value, and an HSL value. Click any swatch to copy the HEX code. The downloadable JSON file includes all three formats for every color.

How does it pick the dominant colors?

The tool uses median-cut quantization: it repeatedly splits the image's color space along its widest channel, then averages each partition to find a clean representative color.

Can I download the palette?

Yes. Download it as a PNG swatch sheet for design mockups or presentations, or as a JSON file containing all HEX, RGB, and HSL values — useful for design systems and code.

Does it work on mobile?

Yes. The tool works in any modern browser on any device — phone, tablet, or desktop. No app or download needed.