Most SaaS founders discover web accessibility requirements when they receive a demand letter, lose an enterprise deal, or get excluded from a public sector RFP. By then, retrofitting accessibility into your product costs 10x more than building it in from the start. If you sell software to businesses or consumers, accessibility is not optional. It is a legal requirement in most markets and a design baseline that affects 15% of the global population.
The Legal Landscape You Need to Know
In the United States, the ADA applies to websites and web applications. Courts have consistently ruled that digital properties are places of public accommodation. If you operate in the US market, you can be sued. Over 4,000 federal accessibility lawsuits were filed in 2023 alone, mostly targeting businesses with inaccessible websites and applications.
The European Accessibility Act takes effect in June 2025, requiring WCAG 2.1 Level AA compliance for most digital products sold in EU member states. Canada has AODA in Ontario and similar provincial legislation elsewhere. Australia enforces the DDA. If you sell internationally, you are subject to multiple jurisdictions with real penalties.
The legal standard in most cases is WCAG 2.1 Level AA. That is Web Content Accessibility Guidelines, version 2.1, conformance level AA. This is not a suggestion. It is the technical specification courts and regulators reference when determining compliance.
What WCAG Level AA Actually Requires
WCAG is organized around four principles: perceivable, operable, understandable, and robust. Level AA includes 50 success criteria. Here are the requirements that trip up most SaaS products:
- Keyboard navigation: Every interactive element must be operable without a mouse. Your dropdowns, modals, and custom controls need to work with Tab, Enter, Escape, and arrow keys.
- Color contrast: Text must have a contrast ratio of at least 4.5:1 against its background. Your light gray text on white fails this. Use a contrast checker.
- Alt text for images: Every meaningful image needs descriptive alternative text. Decorative images need empty alt attributes, not missing alt attributes.
- Form labels: Every input needs a properly associated label element. Placeholder text is not a label. Floating labels often fail accessibility.
- Focus indicators: Users must see where keyboard focus is at all times. If you removed the browser default focus ring for aesthetic reasons, you need a custom focus style with sufficient contrast.
- Heading structure: Use H1, H2, H3 in proper hierarchy. Screen reader users navigate by headings. Your visual hierarchy needs to match your semantic HTML structure.
The Business Case Beyond Compliance
Accessible products close more enterprise deals. Large companies and government agencies have procurement requirements that explicitly mandate WCAG compliance. Your competitors who build accessibility in from the start win those contracts.
Accessible interfaces benefit everyone. Keyboard navigation helps power users. Good contrast helps people using your app on a sunny day or a cheap monitor. Clear labels reduce support tickets. Semantic HTML improves SEO. Tensai Design Studios builds these patterns into every interface we ship because they make products better for all users, not just those with disabilities.
Where to Start If You Are Behind
Run an automated scan with axe DevTools or WAVE. Automated testing catches about 30% of accessibility issues, but it is a fast way to find the low-hanging fruit. Fix the violations it identifies.
Test keyboard navigation yourself. Unplug your mouse. Can you complete your core user flows using only the keyboard? If not, start there.
Hire someone to do a manual audit. A proper WCAG audit requires human judgment. Screen reader testing, cognitive load assessment, and complex interaction patterns cannot be fully automated. Budget for this if you are serious about compliance.
Train your team. Developers and designers need to understand accessibility as a core skill, not a bolt-on afterthought. Make it part of your definition of done.
Practical Takeaway
You do not need to fix everything overnight, but you need a plan. Start by auditing your authentication flow and your core product workflow. Those are your highest risk areas legally and your highest impact areas for users. Fix the critical issues, document what you have done, and build accessibility into your design and development process going forward. The risk of ignoring web accessibility requirements is not just legal exposure. It is the customers you will never know you lost.