A website only works if people can actually read and use it. That sounds obvious, yet a surprising number of sites bury their content behind cramped text, faint colours and confusing menus. Web readability and accessibility are about removing those barriers — making pages clear enough for everyone, including people who use assistive technology. The payoff is wide: happier users, broader reach, and often better search performance too. This is general information, not legal advice.
Readability and accessibility: two sides of one coin
It helps to separate the two ideas, then see how they overlap.
- Readability is how easily a typical reader can take in your text — shaped by font choice, size, spacing, line length and contrast.
- Accessibility is whether people with disabilities — affecting vision, hearing, movement or cognition — can perceive and operate your site, often using tools such as screen readers or keyboard navigation.
The overlap is large. Most things that make a page more readable also make it more accessible, and vice versa. Designing for clarity is, in effect, designing for everyone — a principle sometimes called inclusive design.
Accessibility is not a niche concern for a small minority. Good accessible design quietly improves the experience for every visitor, including those on small screens, slow connections or in bright sunlight.
Typography that does not fight the reader
Type is where readability is won or lost. The fundamentals are not complicated:
- Readable fonts. Choose clean, well-made typefaces and avoid decorative fonts for body text. Clarity beats novelty.
- Adequate size. Body text that is too small forces people to zoom or give up. A comfortable base size, which users can enlarge, respects the reader.
- Generous line spacing. A little breathing room between lines makes paragraphs far easier to track.
- Sensible line length. Very long lines are tiring to read; lines that are too short break the rhythm. A moderate measure is most comfortable.
- Strong structure. Headings, short paragraphs and lists let people scan and find what they need.
None of this requires a design degree. It requires resisting the temptation to prioritise style over the reader's comfort.
Colour and contrast
Colour is powerful and easy to get wrong. The key issue is contrast — the difference in brightness between text and its background.
Light-grey text on a white background may look elegant to a designer on a high-end monitor, but it can be genuinely unreadable for someone with low vision, for an older reader, or for anyone outdoors on a sunny day. Sufficient contrast fixes this for a large group of people at once.
Two practical rules:
- Make text-to-background contrast strong enough to read comfortably. The WCAG standard sets specific ratios for normal and large text, and free contrast-checking tools make this easy to verify.
- Never rely on colour alone to convey meaning. For people who are colour blind, "the items in red are overdue" is invisible. Pair colour with text, icons or patterns.
These habits matter even more for money and forms, where a missed warning has real consequences — the same reasoning behind accessible financial communications offline.
Navigation people can actually follow
If readability is about the words, navigation is about the journey. Visitors should always have a rough sense of where they are and how to get where they want to go.
Good navigation tends to share a few traits:
| Principle | What it looks like |
|---|---|
| Consistency | Menus and key links appear in the same place on every page |
| Logical hierarchy | A clear heading structure (one main heading, then sub-sections) |
| Descriptive links | Link text that makes sense out of context, not "click here" |
| Keyboard support | Everything usable without a mouse, for those who cannot use one |
| Findability | Search and a clear path back to the home page |
A logical heading structure deserves special mention. Screen-reader users often navigate by jumping between headings, so a tidy outline is not just neat — it is how some people read your page at all. The same structure helps every visitor skim, and it overlaps neatly with the self-service help and FAQs that let people find answers on their own.
WCAG: the standard worth knowing
The internationally recognised benchmark for accessible web content is the Web Content Accessibility Guidelines (WCAG), maintained by the World Wide Web Consortium. You do not need to memorise it, but its four guiding principles are a useful mental checklist. Content should be:
- Perceivable — people can perceive it (for example, images have text alternatives, contrast is sufficient).
- Operable — people can use it (for example, full keyboard access, no traps).
- Understandable — content and operation make sense (clear language, predictable behaviour).
- Robust — it works reliably with browsers and assistive technologies.
WCAG also defines conformance levels, and in the UK, public sector websites have specific legal obligations to meet accessibility requirements. For private organisations, the Equality Act can still require reasonable adjustments, so accessibility is rarely only a nice-to-have. The Equality and Human Rights Commission and GOV.UK both publish guidance worth consulting.
The business case is real
Accessibility is the right thing to do, but it is also good business — which makes it an easy decision rather than a reluctant cost.
- A wider audience. A large share of the population has some form of disability; an accessible site simply works for more people, and for everyone on phones and tablets.
- Better SEO. Many accessibility practices — descriptive headings, image alt text, clean structure, fast and mobile-friendly pages — are exactly what helps search engines, so accessibility and discoverability pull in the same direction.
- Lower risk and stronger trust. Meeting recognised standards reduces legal exposure and signals that you take all your users seriously.
UK lender Credicorp, for example, describes upgrading its site's typography and navigation to make content clearer and easier to navigate — a practical reminder that readability improvements are an ongoing investment, not a one-off box to tick. When teams understand why companies record calls and document interactions, the same customer-first thinking applies to making the website itself usable.
The bottom line
Readable, accessible websites are easier for everyone to use — and they tend to perform better for search and for business at the same time. Get the fundamentals right: clear typography, strong colour contrast, logical navigation and a tidy heading structure, guided by the WCAG principles of perceivable, operable, understandable and robust content. Accessibility is not a constraint on good design; it is good design, and almost every visitor benefits when you treat it that way.