Free Color Contrast Checker
Test every text element on your page against WCAG contrast ratio requirements. Find hard-to-read text before your users struggle with it.
How Our Color Contrast Checker Works
Our color contrast checker evaluates the contrast ratio between text color and background color for every text element on your page. It checks both normal text (minimum 4.5:1 for AA) and large text (minimum 3:1 for AA), and flags elements that fail WCAG AA or AAA thresholds. It also detects text on gradient backgrounds and text over images where contrast may vary.
The Impact of Color Contrast Checker Issues
Low contrast text affects everyone, not just users with visual impairments. An estimated 300 million people worldwide have color vision deficiencies. Poor contrast causes eye strain, reduces readability in bright environments, and is one of the most common WCAG failures found in accessibility audits. It is also among the top issues cited in ADA lawsuits.
Issues Our Color Contrast Checker Finds
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Light gray text on white
A common design trend that fails WCAG AA. Text with insufficient contrast against the background is the most frequent contrast issue.
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Placeholder text too faint
Form input placeholders that are nearly invisible, making it hard for users to understand what information is needed.
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Links not distinguishable
Links that only differ from surrounding text by color, with insufficient contrast between the link color and body text color.
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Text over images
Text placed over photographs or gradients where the contrast ratio varies across the text, making parts unreadable.
Related WCAG Requirements
Contrast (Minimum)
Text has a contrast ratio of at least 4.5:1 (3:1 for large text).
Contrast (Enhanced)
Text has a contrast ratio of at least 7:1 (4.5:1 for large text).
How AccessGuard Fixes This
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Automatic Detection
Our scanner checks your entire site for color contrast checker issues in minutes. No manual testing required.
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AI-Powered Fix Suggestions
Get the exact code changes needed to fix each issue. Copy the fix, send it to your developer, and it's done.
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Plain English Reports
Every issue explained without technical jargon. Understand what is wrong and why it matters, even without coding knowledge.
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Priority Ranking
Issues ranked by lawsuit risk so you fix the most dangerous ones first. Focus on what matters, not a 500-item checklist.
Frequently Asked Questions
What contrast ratio do I need for WCAG compliance?
For WCAG AA compliance, normal text needs at least a 4.5:1 contrast ratio and large text (18px bold or 24px regular) needs at least 3:1. For WCAG AAA, the requirements are 7:1 for normal text and 4.5:1 for large text.
How is contrast ratio calculated?
Contrast ratio is calculated using the relative luminance of the foreground and background colors, as defined by the WCAG 2.1 specification. The ratio ranges from 1:1 (no contrast, same color) to 21:1 (maximum contrast, black on white).
Does contrast apply to images and icons?
WCAG 1.4.11 requires non-text elements like icons, form controls, and graphical objects to have at least a 3:1 contrast ratio against adjacent colors. However, logos and decorative graphics are exempt.
Other Accessibility Checkers
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Alt Text Checker
Scan your website for missing or inadequate image alt text. Find WCAG 1.1.1 violations before they become accessibility complaints or lawsuits.
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Link Accessibility Checker
Find vague, ambiguous, or inaccessible links on your website. Make sure screen reader users understand where every link goes.
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Heading Structure Checker
Analyze your page's heading hierarchy for proper nesting and structure. Fix heading issues that confuse screen reader users and hurt your SEO.
Check Your Site Now
Run a free accessibility scan and find color contrast checker issues on your website in minutes. No credit card required.
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