Email accessibility checker
Test a color pair against WCAG contrast thresholds, or paste your email to audit alt text, language and structure. AA needs 4.5:1 for normal text — most “grey on white” copy fails it.
Text contrast checker
Full email audit
Frequently asked questions
What contrast ratio do emails need to pass WCAG?
WCAG 2.1 AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (roughly 18px bold or 24px regular). AAA raises normal text to 7:1. The contrast checker above shows your ratio against all three thresholds.
Why does email accessibility matter?
Around 1 in 5 people use assistive technology or have low vision. Missing alt text leaves images meaningless to screen readers, low contrast makes copy unreadable, and a missing language attribute breaks pronunciation. Accessible emails also tend to render more reliably across clients.
What makes an email accessible?
Descriptive alt text on meaningful images (and empty alt on decorative ones), sufficient color contrast, a set lang attribute, a logical heading order, real text instead of text baked into images, and semantic table roles. This tool flags the ones it can detect from your HTML.