Free Online Color Tools
Pick exact colors, extract dominant image palettes, convert formats, check accessibility contrast, and generate harmonious palettes — all in your browser.
Picker
Color Picker
Upload an image and click to extract HEX, RGB, and HSL color codes.
Converter
Color Converter
Convert colors between HEX, RGB, and HSL instantly.
Checker
Contrast Checker
Check color contrast ratios against WCAG AA and AAA standards.
Generator
Colour Wheel
Create five-colour complementary, analogous, triadic and other harmony palettes from one base colour.
Extractor
Image Palette Extractor
Find the dominant colors in any image and copy the palette as HEX, RGB, or CSS variables.
Pick, Extract, Convert, Check, Generate
ColourPicker.app is a complete color workflow for designers and developers. Use the Color Picker From Image to sample one exact pixel, or the Image Palette Extractor to automatically find the dominant colors across an image. Then use the Color Converter to switch between HEX, RGB, and HSL in one click.
Once you have your colors, run them through the Contrast Checker to verify WCAG AA and AAA accessibility compliance. And when you need a full color scheme, the Colour Wheel creates harmonious palettes from any base color using complementary, analogous, triadic, and other harmony rules.
- Pick any color from a photo, screenshot, or design file — pixel accurate
- Extract a 3, 5, or 8-color dominant palette from an image
- Convert instantly between HEX, RGB, and HSL
- Check color contrast against WCAG AA and AAA standards
- Generate harmonious palettes using color theory
- Copy CSS-ready values with one click
- No install, no account, no cookies
Built for Speed and Simplicity
Each tool is designed to be immediately useful — open it, use it, copy the result. All processing happens locally in your browser, so your images and data never leave your device.
Frequently Asked Questions
- What is ColourPicker.app?
- ColourPicker.app is a free suite of five online color tools for designers and developers. You can pick exact colors, extract dominant image palettes, convert formats, check accessibility contrast, and generate harmonious palettes without signing up.
- What tools are available?
- The English suite includes five tools: Color Picker From Image for exact pixels, Image Palette Extractor for dominant image colors, Color Converter for HEX, RGB, and HSL, Contrast Checker for WCAG contrast, and Colour Wheel for color harmonies.
- Is this free?
- Yes. All tools on ColourPicker.app are completely free to use, with no account required.
- Do my images get uploaded or stored?
- No. All image processing happens locally in your browser. Nothing is uploaded or stored on any server.
- Does it work on mobile?
- Yes. All tools work on both desktop and mobile browsers.