⚡ RapidWebApp
Selected Color #FF0000
Click swatch to open palette System color picker
Popular Presets
HEX
RGB
HSL
Tailwind CSS Match red-600
RGB Sliders
R: 255
G: 0
B: 0

WCAG 2.1 Accessibility Contrast Checker

Checking text readability against this background color

Standard AA & AAA
White Text (#FFFFFF)
The quick brown fox jumps over the lazy dog.
Contrast: 3.99:1
Black Text (#000000)
The quick brown fox jumps over the lazy dog.
Contrast: 5.26:1
🛡️ 100% Client-Side • Instant & Auto-Saved Locally

Color Picker & WCAG Contrast Checker

⚡ Quick Tools

Interactive color palette converter (HEX, RGB, HSL, CMYK), native screen eyedropper, WCAG accessibility score, and Tailwind matcher.

⭐ 4.9/5 (141 votes)
✓ Link copied to clipboard!
⚡

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Frequently Asked Questions

Quick answers about controls, features, accuracy, and local browser saving.

How does the Screen Eyedropper work?
The Eyedropper utilizes the modern native EyeDropper API supported in Chromium browsers (Chrome, Edge, Opera). It allows you to sample any pixel color directly from your desktop or browser window.
What are the WCAG 2.1 accessibility contrast standards?
The Web Content Accessibility Guidelines (WCAG) require minimum contrast ratios between text and background: AA Normal: 4.5:1, AA Large: 3.0:1, AAA Normal: 7.0:1, and AAA Large: 4.5:1.
How is the closest Tailwind CSS color determined?
The tool calculates the Euclidean distance in RGB color space against all official Tailwind CSS v3 / v4 palette shades (slate, red, orange, amber, emerald, teal, blue, indigo, purple, etc.) to find the nearest utility class.
Can I copy colors in multiple formats?
Yes! Instant one-click copy buttons are provided for HEX, RGB, HSL, and closest Tailwind CSS class names.

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