Email Color Contrast Checker
Check WCAG color contrast compliance for your email designs. Enter foreground and background colors to get instant accessibility ratings for normal text, large text, and UI components with real-time preview.
Check WCAG color contrast compliance for email designs
Large text preview (24px)
Normal body text at 16px. This is what most of your email content will look like. Make sure it is easy to read.
Small text at 14px — often used for footer content and disclaimers in marketing emails.
Fine print at 12px — used for unsubscribe links and legal text.
Contrast Ratio
12.63:1
WCAG AAAPass — requires 4.5:1 ratio
Pass — requires 3:1 ratio
Pass — requires 3:1 ratio
Like this tool? Try Sequenzy for free
AI-powered email marketing with Stripe integration, automations, and built-in analytics.
Email contrast tips
- • Many email clients default to light mode — test both light and dark backgrounds
- • CTA buttons need at least 3:1 contrast between button text and button background
- • Avoid light gray text (#999) on white — it fails WCAG and is hard to read on mobile
- • Footer text and unsubscribe links still need to be readable
- • Dark mode overrides may change your colors — use inline styles defensively
About this tool
Color contrast is one of the most impactful accessibility improvements you can make to your emails. Poor contrast makes text unreadable for users with low vision, color blindness, or anyone reading on a bright screen. This checker uses the WCAG 2.1 algorithm to calculate contrast ratios and tells you if your color combinations pass for normal text (4.5:1), large text (3:1), and UI components. Use it alongside our full accessibility checker to ensure your emails work for everyone.
Frequently Asked Questions
More Free Tools
View all toolsDKIM Record Checker
Verify your domain's DKIM configuration for email authentication. Check the public key, selector, and key strength to ensure your emails are properly signed.
Spam Trigger Word Checker
Scan your email content for words and phrases that trigger spam filters. Identify risky language that could send your emails to the spam folder and get suggestions for alternatives.
CAN-SPAM Compliance Checker
Verify your email campaigns meet CAN-SPAM Act requirements. Check for required elements like physical address, unsubscribe links, and proper sender identification to avoid penalties.
SaaS Email ROI Calculator
Calculate the revenue impact of email marketing for your SaaS business. Factor in trial conversions, churn reduction, and customer lifetime value to understand your true email ROI.