The Case for Web Accessibility: Building Sites Everyone Can Use

Around 1.3 billion people globally live with some form of disability. That's roughly 16% of the world's population. If your website isn't designed to be accessible, you're locking out a significant portion of potential customers — and sending a message about who your business is for. Web accessibility isn't a technical box to tick. It's a fundamental part of building a site that respects all its users.

What Web Accessibility Actually Means

Web accessibility means designing and building websites so that people with disabilities can perceive, understand, navigate, and interact with them. This includes people who are blind or have low vision, people who are deaf or hard of hearing, people with motor impairments who can't use a mouse, and people with cognitive or learning disabilities.

The international standard is WCAG — the Web Content Accessibility Guidelines — published by the W3C. These guidelines are organised around four principles: content must be perceivable, operable, understandable, and robust. Meeting these standards doesn't require a complete redesign. Often, the most impactful changes are straightforward.

The Business Case Is Stronger Than You Might Think

The "purple pound" — the spending power of disabled people and their households in the UK — is estimated at over £274 billion annually. Globally, the figure is significantly higher. Businesses that fail to serve this market aren't just being exclusionary — they're leaving money on the table.

Accessibility improvements also benefit everyone, not just people with disabilities. Captions on videos help people in noisy environments. High contrast text is easier to read in bright sunlight. Keyboard navigation benefits power users who prefer not to use a mouse. The accessibility improvements you make for one group routinely improve the experience for all.

There's also a legal dimension. In the UK, the Equality Act 2010 requires businesses to make "reasonable adjustments" to ensure their services are accessible. In the US, the Americans with Disabilities Act has been interpreted to apply to websites in several court rulings. Inaccessible websites have resulted in legal action against businesses of all sizes.

Five Accessibility Wins You Can Make Today

1. Write meaningful alt text for images

Every image on your site should have an alt attribute that describes what the image shows. Screen readers read this text aloud for blind users. Decorative images that don't convey information should have an empty alt attribute (alt="") so screen readers skip them.

2. Ensure sufficient colour contrast

Light grey text on a white background might look elegant, but it's nearly unreadable for people with low vision or colour blindness. WCAG recommends a contrast ratio of at least 4.5:1 for normal text. Free tools like the WebAIM Contrast Checker make it easy to test your colour combinations.

3. Make your site keyboard-navigable

Many users navigate websites entirely with a keyboard, using Tab to move between elements and Enter or Space to activate them. Test this on your own site by unplugging your mouse. Every interactive element — links, buttons, forms — should be reachable and operable with a keyboard alone.

4. Use proper heading structure

Headings (H1, H2, H3, etc.) aren't just visual — they provide structure that screen readers use to help users navigate a page. Use one H1 per page for the main title, and use lower heading levels in a logical hierarchy. Don't skip heading levels for visual effect.

5. Write descriptive link text

Links that say "click here" or "read more" are meaningless out of context. Screen reader users often navigate by jumping between links, and they need to understand where each link goes from the link text alone. Write links like "Read our guide to choosing a tech stack" instead.

Accessibility as a Design Standard

The most accessible sites aren't the ones that added accessibility as an afterthought — they're the ones that built it in from the beginning. When accessibility is a design principle rather than a retrofit, it's faster, cheaper, and produces better outcomes for everyone.

At Studio Adura, accessibility is part of how we build. We write semantic HTML, test with keyboard navigation, and check contrast ratios as standard — not as extras. If you want a website that truly works for everyone, let's start a conversation.