Web accessibility
Web accessibility is the practice of building a website so that people with disabilities can perceive, navigate, and use it, including visitors who rely on screen readers, keyboard navigation, or high-contrast displays. The baseline standard is WCAG, the Web Content Accessibility Guidelines.
In practice
In practice, accessibility is a set of concrete build decisions: text alternatives for images, enough color contrast to read, every interactive element reachable and operable by keyboard, form fields with real labels, a logical heading structure, and visible focus states. WCAG groups these under four principles, that content be perceivable, operable, understandable, and robust [1].
For an established B2B company it is easy to wave off as a compliance chore, but two things make it a business issue. First, a real share of your buyers use assistive technology or simply need larger text and higher contrast, and a site they can't operate is a buyer you never hear from. Second, accessibility overlaps heavily with the work that already helps you: semantic structure and alt text feed SEO, and a keyboard-navigable, well-labeled page is a clearer page for everyone.
There is a risk angle too. In the US, web accessibility complaints and lawsuits under the Americans with Disabilities Act have become common, and the Department of Justice has published guidance treating business websites as covered [2]. This is not legal advice, but for a company that sells to enterprise or government buyers, an accessibility gap can also stall procurement, which increasingly asks vendors for a conformance statement.
The cheapest time to handle it is during design and build, not as a retrofit. Accessible color choices, focus styles, and semantic components baked into a design system cost almost nothing to maintain, while bolting them onto a finished site later means reopening templates and re-testing every page.
Here is a test you can run in two minutes without any tools: put your mouse away and try to move through your homepage with only the Tab key, then reach and submit your main contact form. If you can't get to the navigation, the buttons, or the form fields by keyboard, or you lose track of where the focus is, that is exactly the wall an assistive-technology user hits, and it is costing you contacts you never see.
Common questions
What is WCAG?
WCAG (Web Content Accessibility Guidelines) is the international standard for web accessibility, maintained by the W3C. It defines testable success criteria at three levels, A, AA, and AAA, with AA being the common target for business and legal purposes.
Is web accessibility legally required?
It depends on your jurisdiction and who you sell to, and this isn't legal advice. In the US, business websites have been treated as covered by the Americans with Disabilities Act, and accessibility lawsuits are common, so many companies target WCAG 2.1 AA to reduce risk and to clear enterprise or government procurement.
Does accessibility help SEO?
Yes, they overlap a lot. Alt text, a logical heading structure, descriptive links, and semantic HTML help screen readers and search engines read the page the same way. Accessible pages tend to be cleaner, faster to parse, and easier to rank.
How do I check if my site is accessible?
Start free: navigate the whole page with only the keyboard, check color contrast, and run an automated audit like Lighthouse's accessibility category or the axe extension. Automated tools catch maybe a third of issues, so pair them with manual keyboard and screen-reader checks.
Sources
- W3C Web Accessibility Initiative, “WCAG 2 Overview.” w3.org/WAI/standards-guidelines/wcag
- US Department of Justice, “Guidance on Web Accessibility and the ADA.” ada.gov/resources/web-guidance