WCAG explained: web accessibility standards in plain English

WCAG (the Web Content Accessibility Guidelines) is the widely-recognized standard for making websites usable by everyone, including people with disabilities. You don't need to memorize it, but the principles are worth understanding.

The four principles (POUR)

• •Perceivable — people can perceive the content (e.g. alt text, contrast).
• •Operable — it works by keyboard, not just mouse.
• •Understandable — it's clear and predictable.
• •Robust — it works across browsers and assistive tech.

What 'AA' means

Most organizations aim for WCAG 'Level AA' as a practical target — it covers the essentials like colour contrast and keyboard access. Building to AA reaches more customers and reduces legal risk, and it's simply good practice.