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Free Color Palette Contrast Checker - See AA & AAA for Every Pair
Add your entire color palette and check WCAG contrast for every combination at once. Both AA and AAA results in a single matrix — no dropdowns, no switching.
100% Free
Privacy Focused
Instant Results
Works Everywhere
Palette Contrast Checker
Add your color palette and check WCAG contrast ratios for every pair at once. See AA and AAA results in a single matrix — no switching, no guesswork.
Palette Colors
Contrast Matrix
Pass
Fail
About This Tool
What is Palette Contrast Checker?
The Palette Contrast Checker lets you check WCAG contrast ratios across an entire color palette in one go — not just two colors at a time. Add your brand colors, design tokens, or any set of colors, then click Check Contrast to instantly see a full matrix of every color pair.
Each cell in the matrix shows the actual visual result: the cell background is the real background color, the "Aa" text is rendered in the real foreground color, the contrast ratio is shown (e.g., 7.2:1), and both AA and AAA badges appear side by side — all without switching modes or changing settings. At a glance you can identify which pairs are safe for body text, headings, or UI components.
The column and row headers show pass-count badges per color (e.g., "3/4 AA"), telling you how many valid text partners each color has. Use the Text Size toggle to switch between Normal text thresholds (AA 4.5:1 / AAA 7:1) and Large text thresholds (AA 3:1 / AAA 4.5:1). When ready, export the full matrix as a CSV file or copy the entire palette as CSS custom properties with one click.
All calculations run entirely in your browser — your colors are never sent to any server. Perfect for designers validating brand palettes, developers auditing design tokens, and accessibility specialists generating contrast reports.
Features
Powerful Features
Everything you need in one amazing tool
Full Palette Matrix
Every color pair checked at once. N×N contrast matrix for your entire palette in one view.
AA & AAA in One Cell
Both WCAG compliance levels shown simultaneously per cell. No dropdown needed.
Visual "Aa" Preview
Each cell renders real colors — background fills the cell, "Aa" text shows the foreground.
Pass-Count Badges
Headers show how many valid pairs each color has (e.g., 3/4 AA). Spot weak colors instantly.
Export as CSV
Download the full contrast matrix as a CSV file for accessibility reports and handoffs.
Copy as CSS Variables
One click copies your entire palette as CSS custom properties ready to paste into stylesheets.
Simple Process
How It Works
Get started in 4 easy steps
1
Add Your Colors
Enter hex codes or use the color picker to build your palette. Add as many colors as needed.
2
Click Check Contrast
Hit the Check Contrast button to generate the full N×N contrast matrix instantly.
3
Read the Matrix
Each cell shows the "Aa" preview, contrast ratio, and AA & AAA pass/fail badges together.
4
Export or Copy
Download the matrix as CSV or copy the full palette as CSS custom properties.
Why Us
Why Choose Our Palette Contrast Checker?
Stand out from the competition
Whole Palette at Once
Check every combination in your palette simultaneously. No testing pairs one by one.
AA & AAA Together
Both WCAG levels shown in every cell. Full picture without changing any settings.
Real Visual Preview
See actual color combinations, not just numbers. "Aa" renders with real foreground and background.
Instant Results
Full matrix computed in milliseconds. Fast feedback while refining your palette.
Export Ready
CSV download and CSS variable copy for documentation and developer handoff.
100% Private
All calculations run in your browser. Your colors are never sent to any server.
Use Cases
Perfect For
See how others are using this tool
Brand Color Validation
Check your brand palette for accessibility compliance before finalizing design guidelines.
Design System Auditing
Audit your full design token set. Identify which color pairings are safe for text use.
Website Accessibility Review
Verify all website color combinations meet WCAG standards before launch.
App UI Compliance
Ensure every text/background pairing in your app interface meets AA or AAA standards.
Accessibility Documentation
Export the contrast matrix as CSV to include in accessibility reports and audits.
Client Deliverables
Provide clients with a full contrast matrix report demonstrating accessibility compliance.
Frequently Asked Questions
Everything you need to know about Palette Contrast Checker
Add all your colors using the color picker or by typing hex codes, then click "Check Contrast" to instantly generate a full contrast matrix. Every cell shows the "Aa" visual preview, the contrast ratio, and both AA and AAA pass/fail badges for that color pair — all without needing to switch any settings.
Each cell renders with the background color of one palette entry and the text color of another. The "Aa" text is drawn in the foreground color on top of the background color, giving you a true visual preview of how that combination would look in a real design. Pairs that pass contrast look clearly readable; pairs that fail look washed out.
Each color header shows a pass-count badge such as "3/4 AA", meaning that color meets WCAG AA contrast when paired with 3 out of the other 4 colors in your palette. A green badge means all pairs pass; a red badge means none pass. This helps you instantly spot which colors are versatile and which are problematic.
AA is the legal WCAG standard required by ADA, Section 508, and the European Accessibility Act. For normal text it requires a 4.5:1 ratio; for large text (18pt+ or 14pt+ bold) it requires 3:1. AAA is the enhanced level recommended for critical content like body text on government or healthcare sites — 7:1 for normal text, 4.5:1 for large text. Both are shown in every cell simultaneously so you can decide which pairs to use for body text, headings, or UI components.
The Text Size option switches the contrast thresholds between Normal and Large text. Normal text uses AA 4.5:1 and AAA 7:1. Large text (18pt or larger, or 14pt+ bold) uses the lower AA threshold of 3:1 and AAA of 4.5:1. Switch to Large when checking colors for headings or display text — more pairs will pass. Use Normal for body text, captions, and UI labels.
"Export CSV" downloads a contrast-matrix.csv containing every color pair, its ratio, and AA/AAA pass/fail — useful for accessibility audits and design handoffs. "Copy Palette" copies your current colors as CSS custom properties (e.g., :root { --color-1: #0F172A; --color-2: #FFFFFF; }) to your clipboard, ready to paste directly into a stylesheet.
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