# What Is Web Accessibility (WCAG)? > Web accessibility means people with disabilities can use your website. What WCAG is, what levels A, AA and AAA mean, and the checks every B2B site should pass. Source: https://pentaclay.com/glossary/accessibility-wcag Glossary # What is web accessibility (WCAG)? Web accessibility is the practice of making websites usable by people with disabilities, and WCAG (Web Content Accessibility Guidelines) is the international standard from the W3C used to measure it. Also called WCAG, a11y, Web Content Accessibility Guidelines ## How WCAG works WCAG is organized around four principles: content must be perceivable, operable, understandable and robust. Under them sit testable success criteria at three levels: A (the minimum), AA (the level most laws and contracts refer to) and AAA (the strictest). The current version, WCAG 2.2, was published in October 2023. Examples of AA criteria include a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text, text alternatives for images, full keyboard use, visible focus, and form fields with labels. ## Why it matters for B2B websites Buyers include people who use screen readers, keyboard navigation, magnification or captions. An inaccessible site turns them away. It also comes up in procurement. Public sector and large enterprise buyers often ask vendors about accessibility, and laws increasingly require it: in the US, websites have been the subject of many lawsuits under the Americans with Disabilities Act, and in the EU the European Accessibility Act has applied to many products and services since June 2025. ## Checks every site should pass - Text and buttons meet contrast ratios - Every image has alt text, or empty alt text if it is decorative - Everything works with a keyboard, with a visible focus outline - Headings follow a logical order, with one H1 per page - Form fields have labels and clear error messages - Videos have captions; motion respects “reduce motion” settings - Links say where they go, not “click here” ## Automated vs manual testing Automated tools such as Lighthouse, axe and WAVE catch a useful share of problems, like missing alt text and low contrast, but not all. Keyboard and screen reader testing by a person is still needed to judge whether a page actually makes sense. ## How we handle it We design and build to WCAG 2.2 AA as a baseline: contrast checked in the design system, semantic HTML, keyboard and focus states, labeled forms and reduced-motion support. It is part of every [website design](https://pentaclay.com/services/b2b-website-design) and [enterprise website](https://pentaclay.com/services/enterprise-website-design) project. Read next - [Website design](https://pentaclay.com/services/b2b-website-design) - [Enterprise website design](https://pentaclay.com/services/enterprise-website-design) Last updated 15 November 2026 Related terms ## Terms that go with web accessibility - [Design system A design system is a shared set of rules, reusable components and design values, such as colors, type sizes and spacing, that a team uses to build a website or product consistently.](https://pentaclay.com/glossary/design-system) - [Core Web Vitals Core Web Vitals are three measurements Google uses to judge the real-world experience of a web page: Largest Contentful Paint (loading), Interaction to Next Paint (responsiveness) and Cumulative Layout Shift (visual stability).](https://pentaclay.com/glossary/core-web-vitals) - [Information architecture Information architecture (IA) is the way a website’s content is organized, grouped, labeled and linked, so visitors can find what they need and search engines can understand how pages relate to each other.](https://pentaclay.com/glossary/information-architecture) - [Landing page A landing page is a web page designed around a single audience and a single action, such as booking a demo or downloading a report, usually built for visitors arriving from a specific campaign, ad or search.](https://pentaclay.com/glossary/landing-page) [All glossary terms](https://pentaclay.com/glossary) ## Questions about web accessibility ### Can’t find your answer? Book a call and let’s talk. [Book a call](https://cal.com/pentaclay/discovery-call) Or email us at [contact@pentaclay.com](mailto:contact@pentaclay.com) Which WCAG level should a B2B website meet? Level AA is the usual target. It is what most accessibility laws, public sector rules and enterprise procurement questionnaires refer to. Do accessibility overlay widgets make a site compliant? No. Overlays add a toolbar on top of the page but do not fix the underlying code, and many accessibility experts and users criticize them. Fixing the site itself is the reliable route. What is the difference between WCAG 2.1 and 2.2? WCAG 2.2 keeps the 2.1 criteria, except one that was removed, and adds new ones, mostly about focus visibility, target size, dragging and accessible authentication. Does accessibility help SEO? Indirectly. Many accessibility practices, such as descriptive headings, alt text, link text and clean HTML, also help search engines and AI crawlers understand a page. ## Your business grew up. Your website should too If customers need a demo just to understand what you sell, your website isn’t doing its job. - We sign an NDA on request. - You own the site, the code and every account once it’s paid. - Your first call is with Erfan, the founder. **Kazi Mohammed Erfan** Founder Don’t want to fill in the form? [Book a call directly](https://cal.com/pentaclay/discovery-call) ## Not sure? Ask AI about Pentaclay ### Pentaclay, in short Updated 17 Oct 2026 Pentaclay is a B2B website design agency for AI companies that sell to enterprises. We write, design and build marketing websites in Framer, Webflow and Next.js, and stay to help after launch. Pentaclay LLC is registered in New Mexico, USA; our team works from Dhaka, Bangladesh, with calls until 12:30pm US Eastern. Founded in 2023 by Kazi Mohammed Erfan, who brings 12 years of design experience.