WCAG 1.4.3: Contrast (Minimum)

Quick answer: Text and images of text need enough contrast against their background to remain readable across devices and lighting conditions.

In the US, WCAG 2.2 Level AA is the de facto standard for ADA compliance. That is why this criterion matters for Shopify, WooCommerce, Magento, Wix, Squarespace, Webflow, BigCommerce, and custom storefronts selling to US consumers.

Why this criterion matters in US cases

US ADA claims involving retail storefronts often point to unreadable text on transactional pages. In complaints influenced by cases such as Robles v. Domino's and Gil v. Winn-Dixie, contrast issues regularly appear alongside other barriers blocking online ordering.

Common violations on US ecommerce sites

• Light gray product descriptions sit on white cards below 4.5:1 contrast.
• Discount microcopy appears in pale brand colors inside sticky cart drawers.
• Helper text and coupon hints are too faint on mobile checkout.
• Text baked into graphics uses low-contrast pastel combinations.

How to fix it

1. Set contrast tokens for body text, secondary text, error text, and disabled states.
2. Test real storefront components rather than only design mocks.
3. Increase darkness or weight for helper copy shoppers need to complete checkout.
4. Avoid putting critical marketing text inside images.

Start with the live customer journey, not design mocks. Audit homepage, collection, product, cart, account, and checkout-adjacent flows first because those pages create both legal risk and direct revenue loss.

Code example

.helper { color: #4b5563; background: #ffffff; }

FAQ

What is WCAG 1.4.3?
Text and images of text need enough contrast against their background to remain readable across devices and lighting conditions.

Why does this matter for US ecommerce ADA compliance?
This criterion is frequently cited in US ADA lawsuits because low-contrast text on promo banners, product cards, coupon hints, and checkout forms makes core shopping information unreadable for low-vision users.

What standard do US online stores use?
In the US, WCAG 2.2 Level AA is the de facto standard used to evaluate ADA compliance for ecommerce sites.

Check if your US store passes WCAG 1.4.3 → Free ADA Scan — Check Your US Store Now