Swatchify – CLI to get a color palette from an image
A fast, cross-platform CLI tool that extracts dominant colors from images using k-means clustering.
Swatchify – CLI to get a color palette from an image launched on November 28, 2025 with 6 votes, #2,995 of 9,796 launches that month and more than 75% of that year's launches.
What it does
Extract dominant colors from images using k-means clustering. Available as a Go CLI tool, REST API server, Go library, and browser-only JavaScript npm package (swatchme). Open source, blazing fast, zero dependencies.
swatchme is a zero-dependency JavaScript/TypeScript library for extracting dominant colors from images entirely in the browser. No server required. Uses the same k-means++ clustering algorithm as the Go version. ~2KB gzipped. import { extractColors, generatePaletteCanvas } from 'swatchme' ; // Extract colors from a file input const file = document.querySelector( 'input[type="file"]' ).files[0]; const colors = await extractColors(file, { numColors: 6, excludeWhite: true }); // → [{ hex: "#4A90D9", percentage: 32.5, rgb: {r,g,b} }, ...] // Generate a palette canvas const canvas = generatePaletteCanvas(colors, 500, 100); document.body.appendChild(canvas); 🌐 BROWSER ONLY 100% client-side. No…from james-see.github.io
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