Colorize - Extract Color Palettes from Any Website

TL;DR

TL;DR: Colorize is a free browser tool that extracts the full color palette from any website URL — no sign-up, no API key, no install. Paste a link, copy the palette.

Source and Accuracy Notes

This section is MANDATORY. All links must be verified from actual source, not guessed.

• Project page: colorize.design — visited and verified
• HN launch thread: news.ycombinator.com/item?id=43331038
• License: Free tool (no license file found; verify with author before assuming open-source)

What Is Colorize?

Colorize is a zero-friction web tool that extracts the dominant color palette from any website. Enter a URL, and it returns the site’s full color scheme — primary, secondary, and accent colors — in a clean, copyable format.

The tool is entirely browser-based. There is no sign-up form, no credit card, and no API key required to get started.

How It Works

Step 1: Paste a URL

Open colorize.design and paste any website URL into the input field. The tool accepts URLs with or without the https:// prefix.

Step 2: Extract the Palette

Click the generate button (or press Enter). Colorize fetches the target page and analyzes its rendered CSS to extract the color scheme.

Step 3: Copy the Result

The extracted palette displays as a grid of swatches. Each swatch shows:

• The hex color code
• RGB and HSL values
• A copy button for each value

You can copy individual colors or export the entire palette at once.

Features

• No sign-up required — open the site and use it immediately
• Free to use — no pricing tier, no usage limit advertised
• Color format export — copy as HEX, RGB, or HSL
• Batch export — download the full palette in one click
• API access — the site mentions an API for programmatic access

Practical Evaluation Checklist

• [ ] Paste a URL and receive a palette within seconds
• [ ] All swatches display correct hex values matching the target site
• [ ] Copy buttons work without sign-up
• [ ] Works on mobile and desktop browsers
• [ ] No intrusive ads or paywalls

FAQ

Q: Is this open source? A: The website does not clearly advertise a source repository. Verify with the author before assuming open-source status.

Q: Does it work on password-protected pages? A: No — Colorize fetches publicly accessible pages only. It cannot extract palettes from pages behind authentication.

Q: Is there an API? A: The site mentions API access. Check the official site for current API documentation and rate limits.

Q: What formats does it export? A: HEX, RGB, and HSL are confirmed. Other formats may be available — verify from the official docs.

Conclusion

Colorize fills a small but real gap in the developer toolkit: a zero-setup way to grab a site’s color scheme without installing a browser extension or running a CLI tool. The entirely free, no-sign-up model makes it frictionless to use on any device. If you need to match a client site’s palette or quickly audit competitor color choices, it is worth keeping the tab open.

For programmatic or bulk extraction, check whether the API is publicly available — the site hints at one, though details were not confirmed at time of writing.