WCAG 1.3.3: Sensory Characteristics
Level AQuick answer: Instructions cannot depend only on location, color, shape, or sound because not every shopper perceives those cues the same way.
What This Means
On ecommerce sites, Sensory Characteristics usually shows up in repeating storefront components such as product cards, PDP media, search results, cart drawers, checkout forms, and support content. If the live experience depends on patterns like checkout says 'click the green button on the right' with no button name. or product configurators tell users to 'choose the round icon' instead of naming the option., disabled shoppers can lose context or get blocked before purchase.
This criterion matters because D2C teams often fix the homepage but miss reusable app blocks, campaign pages, and mobile-specific UI. The practical standard is simple: build the same outcome for keyboard users, screen-reader users, low-vision users, and anyone relying on captions, labels, structure, or predictable behavior.
For Shopify, WooCommerce, and custom storefronts, the fastest remediation path is usually template-level work. Fix the repeated component once, then retest every place it appears across browse, buy, and post-purchase journeys.
Common Violations on Ecommerce Sites
- Checkout says 'click the green button on the right' with no button name.
- Product configurators tell users to 'choose the round icon' instead of naming the option.
- Form help says 'errors are marked in red below' without identifying the field.
- Support content tells users to 'tap the top banner' when that banner moves on mobile.
How to Fix It
Start with the live customer journey, not isolated components in Storybook or Figma. Audit the problem on category pages, product detail pages, quick views, cart, checkout, account, and help templates.
- Reference controls by their visible text or accessible name, not only by appearance.
- Pair visual instructions with explicit labels, steps, or field names.
- Mention both location and purpose when orientation helps, such as 'Select Continue to shipping'.
- Update CMS guidance so merchandisers do not publish purely sensory instructions.
On Shopify, fix the theme section or app block that repeats the defect. On WooCommerce and WordPress, update the template override or plugin output. In custom React or headless storefronts, move the fix into shared components so merchandisers cannot reintroduce the issue with every campaign.
Code Example
<!-- Before -->
<p>Click the green button on the right to continue.</p>
<!-- After -->
<p>Select <strong>Continue to shipping</strong> to move to the next checkout step.</p>FAQ
What is WCAG 1.3.3?
Instructions cannot depend only on location, color, shape, or sound because not every shopper perceives those cues the same way.
How does WCAG 1.3.3 affect ecommerce sites?
It affects ecommerce anywhere shoppers interact with checkout says 'click the green button on the right' with no button name. and product configurators tell users to 'choose the round icon' instead of naming the option. If those patterns are inaccessible, customers can miss product information, fail forms, or abandon checkout.
How to fix WCAG 1.3.3 violations?
Start by auditing the live storefront, then Reference controls by their visible text or accessible name, not only by appearance.; Pair visual instructions with explicit labels, steps, or field names.; Mention both location and purpose when orientation helps, such as 'Select Continue to shipping'.. Prioritize templates and apps that repeat the issue across product, cart, checkout, and account pages.
Check if your store passes WCAG 1.3.3 → Free ADA Compliance Scan