Future StackAccessibility used to be treated as a specialist concern, relevant mainly to government or large institutional sites. That's no longer a realistic view. A meaningful share of any audience is browsing with some kind of visual, motor or cognitive difference — from low vision to colour blindness to simply using a screen reader while doing something else with their hands.
Practically, accessible design starts with things that are easy to get right from the beginning: sufficient colour contrast between text and background, buttons and links that are large enough to tap accurately, and a logical heading structure that lets both screen readers and search engines understand what's on the page.
It also means not relying on colour alone to convey information — a form error shown only as a red border is invisible to a colour-blind visitor unless there's also text explaining what went wrong. Alt text on meaningful images, keyboard-navigable menus, and video captions all fall into this same category of small additions with outsized impact.
There's a business case here too, separate from doing right by visitors: accessible sites tend to have cleaner semantic structure, which search engines reward, and they reduce the risk of the kind of accessibility complaints that have become more common as awareness of digital accessibility law has grown. Building it in from the start costs very little; retrofitting it later is far more expensive.
Getting started doesn't require a full accessibility audit on day one. Checking colour contrast, adding alt text to meaningful images, and making sure every interactive element is reachable by keyboard alone covers most of the highest-impact issues, and each one is a small, contained fix rather than a redesign. Treating accessibility as a normal part of design, rather than a specialist add-on tackled at the very end, keeps the cost low and the results considerably more thorough across the whole site.