Free Online Color Converter & Contrast Checker

Convert colors between HEX, RGB, and HSL formats. Test WCAG contrast ratios against light and dark backgrounds.

#4F46E5

Pick Visual Color

HEX

RGB

HSL

WCAG 2.1 Contrast Ratio Check

Against White Text

Against Black Text

About Free Online Color Converter & Contrast Checker

Convert color codes seamlessly between HEX, RGB, and HSL color models with real-time bidirectional synchronization. Includes an interactive color picker, live color preview swatch, and WCAG 2.1 text contrast ratio calculations for web accessibility.

How to Use Free Online Color Converter & Contrast Checker Online

Input Color Code

Type or paste a color value in HEX (#4F46E5), RGB (rgb(79, 70, 229)), or HSL (hsl(243, 75%, 59%)), or use the color picker.

Automatic Synchronization

All color representations update simultaneously with exact mathematical precision.

Check WCAG Contrast

Review the calculated contrast ratio against black and white text to ensure AA and AAA accessibility compliance.

Copy Desired Format

Click Copy next to any format to paste directly into your CSS stylesheet, Figma file, or Tailwind config.

Key Features & Privacy Benefits

Tri-Directional Conversion: Input in any format (HEX, RGB, HSL) and immediately receive accurate mathematical conversions in the other two models.
WCAG 2.1 Accessibility Scoring: Evaluates contrast ratios against 4.5:1 (AA Normal), 3:1 (AA Large), and 7:1 (AAA) web accessibility guidelines.
Native Color Picker: Use your browser's native color wheel and eyedropper to sample any color directly on screen.
Web Designer Friendly: Pre-formats values for instant copy-pasting into modern CSS rules and UI component libraries.

Frequently Asked Questions

What is the difference between RGB and HSL?

RGB defines colors by red, green, and blue light intensity (0-255). HSL defines colors by Hue (0-360 degrees on the color wheel), Saturation (0-100%), and Lightness (0-100%), which is more intuitive for adjusting color tints and shades.

What is a passing WCAG contrast ratio for body text?

WCAG 2.1 Level AA requires a contrast ratio of at least 4.5:1 for normal body text (under 18pt), and at least 3:1 for large text (18pt or larger, or 14pt bold).

Does this tool support 3-digit and 6-digit HEX codes?

Yes. It supports standard 6-digit hex codes (#RRGGBB) as well as shorthand 3-digit hex codes (#RGB), automatically expanding shorthand notations.