Free Online Color Picker — HEX, RGB, HSL Converter & Contrast Checker

Overview: Interactive Color Wheel, HEX/RGB Converter & Contrast Checker

Interactive color spectrum picker with HEX, RGB, HSL, CMYK, and HSV conversions, contrast ratio checks, and palette generator. All computations and data processing are executed 100% locally on your device using client-side WebAssembly, HTML5 Canvas, and modern Web APIs without uploading files to any external server.

Supported Formats

Color Picker & Palette Studio supports the following file formats:

  • CSS — client-side processing support.
  • HEX — client-side processing support.
  • RGB — client-side processing support.

How to Use Color Picker & Palette Studio in Browser

  1. Pick or Enter Color: Use the visual color picker or paste any HEX, RGB, or HSL code.
  2. Inspect Formats: View instant synchronized values in HEX, RGB, HSL, and CMYK.
  3. 1-Click Copy: Click any format to copy the CSS-ready value to your clipboard.

Key Features & Privacy Protections

  • 100% Client-Side Privacy: Zero cloud upload. Your documents, photos, and files never leave your local browser sandbox.
  • Zero Installation: Runs instantly in Chrome, Safari, Firefox, Edge, Android, and iOS browsers.
  • Free Forever: No sign-up, no subscriptions, no ads, and no file size limits.

Frequently Asked Questions (FAQ)

Does it support 1-click clipboard copy for CSS?

Yes, clicking any format copies the CSS formatted code (e.g. #2563eb, rgb(37,99,235), hsl(222,83%,53%)).

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Color Picker & Palette Studio

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v1.0.0Free · Palette EngineDeveloper Tools

Free Online Color Picker — HEX, RGB, HSL Converter & Contrast Checker

Interactive Color Wheel, HEX/RGB Converter & Contrast Checker. Interactive color spectrum picker with HEX, RGB, HSL, CMYK, and HSV conversions, contrast ratio checks, and palette generator.

What is Color Picker and what does it do?

The Color Picker & Palette Studio is a modern web utility for choosing, converting, and testing colors. It features an interactive color wheel, real-time conversion across HEX, RGB, HSL, HSV, and CMYK formats, and a WCAG 2.1 accessibility contrast checker.

Engineered for designers and frontend developers, it operates entirely in your browser with one-click clipboard copying for CSS code snippets. You can test contrast ratios against white and dark backgrounds to ensure your designs meet accessibility standards.

  • Interactive color wheel and visual sliders for hue, saturation, lightness, and alpha.
  • Synchronized instant conversion between HEX, RGB, HSL, HSV, and CMYK color spaces.
  • WCAG 2.1 AA and AAA color contrast ratio checker for text readability and accessibility compliance.
  • Generate harmonious color schemes including complementary, analogous, and triadic palettes.
  • One-click clipboard copy for CSS color values (`#hex`, `rgb()`, `hsl()`).

How does Color Picker work?

The color engine applies mathematical color space transformation formulas to convert between Cartesian RGB cube coordinates and cylindrical HSL/HSV color models in JavaScript.

It calculates relative luminance per the W3C WCAG 2.1 formula (`(L1 + 0.05) / (L2 + 0.05)`) to determine exact contrast ratios and accessibility pass/fail grades for normal and large text.

100% private: all processing happens locally in your browser using client-side WebAssembly, HTML5 Canvas, and modern Web APIs. Your files are never uploaded to any server.

Who needs Color Picker?

UI/UX & Web Designers

Pick brand color schemes, test contrast accessibility for WCAG compliance, and create harmonious design systems.

Frontend Developers

Quickly convert and copy CSS-ready HEX, RGB, and HSL values directly into stylesheets and Tailwind configs.

Graphic Artists & Illustrators

Explore complementary, triadic, and monochromatic color palettes for digital artwork and logos.

Marketing & Brand Specialists

Match and verify exact brand hex codes for social media graphics, print collateral, and presentation decks.

Supported file formats

Color Picker & Palette Studio processes the following file extensions and data formats directly in your browser:

CSSHEXRGB

How to use Color Picker — step by step

  1. 1

    Pick or Enter Color

    Use the visual color picker or paste any HEX, RGB, or HSL code.

  2. 2

    Inspect Formats

    View instant synchronized values in HEX, RGB, HSL, and CMYK.

  3. 3

    1-Click Copy

    Click any format to copy the CSS-ready value to your clipboard.

Frequently asked questions

Does it support 1-click clipboard copy for CSS?

Yes, clicking any format copies the CSS formatted code (e.g. #2563eb, rgb(37,99,235), hsl(222,83%,53%)).

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