Website Accessibility: WCAG Compliance Guide

Why Website Accessibility Matters for Every Business

Over 1 billion people worldwide live with some form of disability. In the United States alone, 26% of adults have a disability that affects how they use the internet. When your website isn’t accessible, you’re excluding a massive portion of potential customers — and exposing your business to legal risk.

Website accessibility means designing and developing your site so that people with visual, auditory, motor, or cognitive disabilities can perceive, understand, navigate, and interact with it effectively. It’s not just the right thing to do — it’s increasingly a legal requirement.

At SecureTechs, we build every website with accessibility as a core requirement, not an afterthought. This guide covers what you need to know about WCAG compliance and how to make your site accessible to all users.

Understanding WCAG: The Accessibility Standard

The Web Content Accessibility Guidelines (WCAG) are the international standard for web accessibility. Published by the W3C, these guidelines provide specific, testable criteria for making websites accessible.

WCAG Conformance Levels

Most businesses should target WCAG 2.1 Level AA compliance. This is what the ADA and most accessibility laws reference.

The Four WCAG Principles (POUR)

• Perceivable: Users must be able to perceive the information (text alternatives for images, captions for video, sufficient color contrast)
• Operable: Users must be able to operate the interface (keyboard navigation, no time limits, no seizure-inducing content)
• Understandable: Users must be able to understand the information and interface (clear language, predictable navigation, error prevention)
• Robust: Content must work with current and future technologies (valid HTML, ARIA landmarks, compatible with assistive tech)

Common Accessibility Issues and How to Fix Them

Images Without Alt Text

Screen readers cannot interpret images without alternative text. Every meaningful image needs a descriptive alt attribute that conveys its purpose.

• Informative images: Describe what the image shows — “Team meeting discussing quarterly goals”
• Functional images: Describe the action — “Submit contact form”
• Decorative images: Use empty alt=”” so screen readers skip them
• Complex images (charts/graphs): Provide detailed text description nearby

Poor Color Contrast

Text must have sufficient contrast against its background. WCAG AA requires:

• Normal text: 4.5:1 contrast ratio minimum
• Large text (18px+ bold or 24px+ regular): 3:1 contrast ratio minimum
• UI components and graphics: 3:1 contrast ratio minimum

Use tools like WebAIM’s Contrast Checker to verify your color combinations meet these thresholds.

Missing Keyboard Navigation

Many users cannot use a mouse. Your entire site must be navigable using only a keyboard (Tab, Enter, Escape, Arrow keys). Common failures:

• Custom dropdown menus that only respond to mouse clicks
• Modal dialogs that trap focus or can’t be closed with Escape
• Interactive elements without visible focus indicators
• Skip-to-content links missing (forces keyboard users to tab through every nav item)

Form Accessibility

Forms are critical interaction points. Accessible forms need:

• Visible labels associated with inputs (using the for attribute)
• Error messages that identify the field and explain the issue
• Required fields clearly marked (not just with color)
• Logical tab order matching visual layout
• ARIA attributes for dynamic validation messages

Accessibility Testing Tools

Automated tools catch about 30-40% of accessibility issues. Manual testing with keyboard navigation and screen readers is essential for thorough coverage.

Legal Requirements: ADA and Beyond

Website accessibility lawsuits have increased dramatically. In 2025, over 4,000 ADA web accessibility lawsuits were filed in the US. Key legal frameworks:

• ADA (Americans with Disabilities Act): Courts consistently interpret Title III to cover websites of businesses open to the public
• Section 508: Federal agencies and their contractors must meet accessibility standards
• EAA (European Accessibility Act): Takes effect June 2025 for businesses serving EU customers
• AODA (Ontario): Canadian businesses with 50+ employees must be WCAG 2.0 AA compliant

The most common targets for lawsuits are e-commerce sites, restaurants, healthcare providers, and financial services — but any business website can receive a demand letter.

Getting Started: Your Accessibility Checklist

1. Run an automated scan with WAVE or axe DevTools to identify obvious issues
2. Test keyboard navigation — can you reach and operate everything without a mouse?
3. Check color contrast on all text elements
4. Verify all images have appropriate alt text
5. Test forms with a screen reader
6. Add skip-to-content links and proper heading hierarchy
7. Include accessibility in your QA process for all future updates
8. Contact SecureTechs for a professional accessibility audit and remediation plan