Color Helper is an independent, browser-based color utility suite built for designers, developers, and anyone who works with colors in the web. It bundles 16+ free, fast, accessible tools for color conversion, palette generation, contrast checking, and accessibility auditing — all running entirely in your browser without any server-side processing.

What Color Helper does

Color Helper gives you a single place to handle every common color task on the web. You can pick colors from images, convert between HEX / RGB / HSL formats, generate harmonious color palettes based on color theory rules (complementary, analogous, triadic, tetradic, monochromatic), check WCAG 2.1 contrast ratios for accessibility compliance, extract palettes from brand logos, simulate color blindness, and look up any of the 141 CSS named colors with full HEX, RGB, HSL, and tints/shades.

Privacy and how the tools work

Every tool on Color Helper runs as static JavaScript inside your browser. Nothing you paste, drop, or type is ever uploaded to a server — we don't have one. Color extraction from images happens locally via the HTML5 Canvas API, palette generation uses math in your browser's JavaScript engine, and contrast calculations are done in real time without any network round-trips. Your data never leaves your device.

We don't run our own analytics. The only third-party scripts that load are Google AdSense (for contextual ad serving on tool pages) and the IndexNow search-engine submission API. AdSense may set its own cookies to serve and cap ads — you can manage this via the cookie consent banner and at adssettings.google.com. The image color picker, palette library, contrast checker, and every other tool run entirely as client-side JavaScript. We never see your inputs.

How Color Helper is different

Most color tools online either bombard you with ads before showing you the picker, require an account for trivial features, or upload your images to "extract colors" in ways that should make any privacy-conscious designer uncomfortable. Color Helper treats your work as your own: no sign-ups, no upload steps, no rate limits, no watermarks, no "premium" tier hiding the actual tool.

Every tool is keyboard-accessible, mobile-friendly, and works on slow connections. We test against the latest Chrome, Firefox, Safari, and Edge — and we measure real-world load times on a throttled 3G connection in our CI pipeline.

Who built Color Helper

Color Helper is an independent project. It is not affiliated with any company, design tool suite, or brand — and never has been. The site is built with Astro for static generation, deployed on Cloudflare Pages for global edge delivery, and uses pure HTML, CSS, and vanilla JavaScript on the client side. The color algorithms come from the W3C CSS Color specification, the WCAG 2.1 contrast formula, and decades of established color theory (Itten's color wheel, Munsell's color system, modern HSL math).

How the color data is sourced

The 141 CSS named colors come straight from the W3C CSS Color Module Level 4 specification, which is the official source for every color name and hex value you see on our color pages. WCAG contrast thresholds follow the W3C Web Content Accessibility Guidelines (WCAG) 2.1, with both AA and AAA conformance levels available. Tints and shades are calculated using the HSL color model.

Want to support the project?

The simplest way to support Color Helper is to use the tools and share them with other designers and developers. We don't accept donations or run a Patreon — the site is funded by unobtrusive, privacy-respecting ads on tool pages, which keep the lights on without selling your data. If you find a bug or want a feature, reach out via the contact page.

Open standards and accessibility

Color Helper is built around open web standards: the W3C CSS Color spec, WCAG accessibility guidelines, and the JSON-LD Schema.org vocabulary for structured data. We test our tools against screen readers (NVDA, VoiceOver) and keyboard-only navigation, and we publish our source on GitHub for transparency. If you spot an accessibility issue, please let us know.

Last updated: June 19, 2026