Image Color Palette Extractor & Eyedropper
/inspect/Dominant Swatches · Pixel Eyedropper Loupe · CSS & JSON Export
Click to upload an image, or drag & drop here
Instantly extracts dominant color palettes and enables pixel-precise eyedropper sampling.
How Color Quantization Extracts Dominant Palettes from Images
Digital photographs and graphic designs contain millions of individual RGB pixel values. Extracting a cohesive, harmonious 6-to-8 swatch color palette requires algorithmic color quantization.
By plotting pixel frequencies in three-dimensional RGB color space and grouping clusters using statistical variance, LocalDevTools isolates the most prominent primary, secondary, and accent colors that define your artwork.
In addition to automated palette clustering, our interactive pixel eyedropper loupe reads the raw RGBA buffer of the underlying HTML5 Canvas in real-time, allowing UI designers and frontend developers to pick precise pixel colors with single-pixel accuracy.
How to Extract Colors from Images
- Upload your image: Drag and drop any image file, click to browse, or press
Ctrl + Vto paste an image straight from your clipboard. - View automatic swatches: The top palette bar instantly displays 8 dominant extracted colors with their respective HEX and RGB values.
- Sample specific pixels: Hover over any area of the photo to activate the real-time eyedropper loupe. Click anywhere on the image to add that exact pixel color to your palette.
- Copy or export: Click any color swatch to copy its HEX code, or click Copy CSS Variables to paste
:root { --color-1: #...; }straight into your stylesheet.
Frequently Asked Questions (FAQ)
How does the color extraction algorithm identify dominant colors? ↓
LocalDevTools samples the image using HTML5 Canvas pixel quantization (Median Cut and K-Means clustering). It groups millions of individual pixels into chromatic clusters to discover the most visually harmonious dominant, secondary, and accent swatches.
Can I sample specific individual pixels with a magnifier? ↓
Yes! Move your cursor across the preview canvas to activate the 8x pixel zoom loupe. Clicking on any precise pixel copies its HEX, RGB, or HSL color code directly to your clipboard.
Can I use this tool to create color themes for Tailwind CSS? ↓
Yes! Use the Copy CSS Variables or Copy JSON button to immediately paste the extracted color palette into your tailwind.config.js or CSS design system tokens.
Is my artwork or image uploaded to any server? ↓
Never. All pixel processing occurs 100% inside your local web browser using client-side JavaScript and the HTML5 Canvas API. Your files never leave your computer.