Case Study WCAG & Section 508 Accessibility Compliance for Enterprise Web Applications
How we conducted a comprehensive accessibility audit and remediated gaps to meet WCAG and Section 508 standards.
The Client
Fostering digital inclusion and regulatory compliance.
The client is an enterprise digital services provider dedicated to offering inclusive web experiences. Their applications serve a diverse, high-volume user base, requiring consistent usability and access. However, like many organizations that scaled rapidly, their initial software development focus was on feature rollout rather than accessibility standards.
As digital accessibility regulations tightened, the client recognized that their web applications were not fully accessible to users with disabilities, including those who rely on screen readers and keyboard navigation. This gap created potential regulatory compliance risks under WCAG and Section 508 guidelines, while limiting their addressable audience.
To audit their systems, remediate usability gaps, and ensure compliance, the client partnered with Intelegencia. The goal was to perform a complete accessibility audit and implement the code modifications needed to establish an inclusive user experience.
The Challenge
Addressing accessibility gaps in core digital platforms.
Before the engagement, the client's web application was built without structured accessibility considerations. Visual layouts, input forms, and navigation menus lacked the semantic HTML tags and WAI-ARIA labels required by screen readers, making it difficult for specially-abled individuals to complete workflows.
Additionally, the interface relied on hover-based interactions and color-only cues, creating barriers for users with visual impairments or motor-skill limitations. The client needed to align their application with WCAG 2.1 Level AA and Section 508 standards. Beyond compliance, they saw this as an opportunity to improve overall usability and increase organic traffic by optimizing the page structure for search engines.
Application not accessible for specially-abled users.
Need to meet WCAG and Section 508 accessibility standards.
Requirement to improve user engagement and usability.
Opportunity to increase organic traffic through accessibility improvements.
What our audit found
Auditing semantic markup, keyboard focus, and contrast levels.
Our quality engineering team performed a detailed accessibility audit of the client’s web application. Using automated scanning tools and manual screen reader evaluations, we checked the entire interface against WCAG success criteria. The audit revealed three main structural problems.
First, many form fields and buttons did not have text labels, leaving screen reader users without context. Second, keyboard navigation was broken; users could not navigate the application using the Tab key because focus rings and logical tab sequences were not configured. Finally, several text elements failed color-contrast guidelines, making them difficult to read under normal lighting conditions.
Absence of screen reader labels on form fields and navigation menus.
Broken keyboard navigation and focus indicators across core pages.
Contrast ratios below WCAG Level AA requirements for key text elements.
Custom dropdowns and modals lacked the roles and states needed for assistive devices.
The Solution
How we turned it around.
Conducting a comprehensive accessibility audit
We began the project with a full accessibility audit aligned with WCAG standards. We analyzed the application's page templates, components, and user workflows. This audit helped us categorize compliance errors by severity, focusing on issues that blocked users from completing registrations or submitting forms.
Our team evaluated the application using various screen reader tools across different operating systems and browsers. This manual testing process identified interaction issues that automated scanners missed, providing a clear roadmap for remediation.
What we shipped
- Audited all user interfaces against WCAG 2.1 Level AA criteria.
- Categorized accessibility errors by operational severity.
- Tested workflows using screen readers to identify usability blocks.
- Created a prioritized remediation backlog for the development team.
Gap remediation and semantic HTML refactoring
To resolve the identified accessibility issues, we modified the application's front-end code. We replaced generic div elements with semantic HTML5 markup, such as header, main, nav, and section tags, providing a clear document hierarchy for assistive technologies.
We added WAI-ARIA attributes to custom interactive components, ensuring that assistive devices can read dynamic states like expanded or collapsed menus. We also updated form inputs to include descriptive labels and error announcements, helping all users complete forms successfully.
What we shipped
- Refactored application code to use semantic HTML5 elements.
- Implemented WAI-ARIA roles, states, and properties for custom controls.
- Added aria-live announcements to dynamically notify users of system errors.
- Verified that all form fields include persistent, screen-readable labels.
Keyboard navigation and color contrast optimization
To ensure inclusive usability, we rebuilt the application's keyboard navigation. We established a logical tab order and configured visible focus rings, allowing keyboard-only users to navigate the portal.
We also updated the application's CSS variables to improve color contrast. We adjusted background and text colors to meet the minimum 4.5:1 contrast ratio required by WCAG guidelines, while maintaining the client's core branding.
What we shipped
- Enabled full keyboard navigation by establishing a logical tab flow.
- Configured visible, high-contrast focus indicators for interactive elements.
- Adjusted color schemes to meet WCAG 4.5:1 contrast requirements.
- Standardized text scaling to support browser zoom up to 200% without breaking layouts.
The Numbers
Outcomes we can talk about.
The remediation of the client's digital applications resolved their accessibility gaps. By refactoring the front-end code, the client achieved full compliance with WCAG 2.1 and Section 508 standards, removing regulatory compliance risks.
The updates improved usability across all user groups, resulting in higher user engagement. The clean, semantic markup also improved search engine indexing, helping the client reach a broader, more inclusive audience.
Note on Metrics: Due to the client's strict data sharing guidelines and the regulatory focus of the compliance project, quantitative traffic metrics were restricted from public release. The success of the project was measured by achieving full compliance with WCAG guidelines and verified compatibility with major screen reader tools.
What We Built
What's Next
Integrating accessibility tests into development pipelines.
With the core applications remediated, the next phase will focus on maintaining these accessibility standards. We plan to integrate automated accessibility testing tools into the client's CI/CD pipeline.
This setup will automatically scan new code for accessibility issues before deployment, ensuring that future updates remain compliant and accessible to all users.
Frequently Asked Questions
About This Project
The questions teams usually ask when they want to run a similar engagement.
WCAG is a set of international web accessibility guidelines, while Section 508 is a US federal law requiring government-funded organizations to make their digital products accessible. Section 508 references WCAG standards as the criteria for compliance.
The Real Numbers
Need real numbers? Let's talk.
We kept the names off the page. The story is real, the outcomes are real, and we're always happy to walk a serious team through the rest of it.
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