WCAG Levels: Importance, Criterias, Differences

Your complete guide to WCAG levels and criteria, helping you achieve optimal digital accessibility.

✨ They Make Design ✨
TMDesign
6 min readSep 5, 2023

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What is WCAG?

WCAG stands for Web Content Accessibility Guidelines, a set of benchmarks established by the World Wide Web Consortium (W3C) to make the Internet more inclusive.

These web standards serve as a roadmap for digital designers, developers, and business owners, outlining how to make their web content more accessible to everyone, including those with disabilities.

Created and maintained by experts in the field of web accessibility, WCAG aims to universalize access to digital platforms, ensuring that no one is left behind.

Why Web Accessibility Matters?

The Internet is integral to modern life, offering unparalleled convenience and wealth of information. However, many people still face accessibility barriers when interacting online, preventing them from fully utilizing web resources.

Such accessibility issues range from poor website design to incompatible assistive technologies. Failing to address these concerns not only limits the usability of your web content but also isolates a significant portion of the population.

Source: freepik.com

The importance of accessibility cannot be overstated; it’s not just a technical requirement but a moral imperative to make web content available and usable for all.

Overview of WCAG Compliance Levels

Why Different WCAG Levels Exist?

WCAG offers three levels of accessibility guidelines — A, AA, and AAA — to ensure a more nuanced approach to digital inclusivity.

These three levels form the backbone of WCAG conformance levels, helping organizations calibrate their web features for different user needs. By not adopting a one-size-fits-all model, WCAG compliance encourages websites and apps to be more adaptable and sensitive to the diverse accessibility needs of their audience.

Recognizing the three levels in WCAG ensures that even minimal efforts at inclusivity can make a real difference while leaving room for more extensive commitments to accessibility.

Quick Look at Levels A, AA, AAA

Navigating the complex landscape of web accessibility can be simplified by understanding the distinct WCAG levels. Each WCAG level outlines varying degrees of stringency in digital accessibility requirements.

Image source

These accessibility guidelines offer a structured framework for web designers and developers. Below, we dissect these conformance levels to see what each entails.

Level A: The Basics

  • Focuses on fundamental elements of web accessibility. Ideal for websites that are in the initial stages of optimizing for inclusivity.

Level AA: The Intermediate

  • It aims to go beyond the basics to achieve a more substantial level of compliance. Level AA guidelines often become the industry standard for accessibility.

Level AAA: The Gold Standard

  • Seeks to make digital content as accessible as possible, adhering to the most stringent criteria. It’s the epitome of what accessibility can be.

By understanding these levels, you can map your path to creating a wholly inclusive digital environment more effectively.

Detailed Guide to WCAG Levels

1. Level A: Basic Web Accessibility Criteria & Examples

Level A serves as the minimum level of conformance regarding WCAG. At this point, websites should adhere to essential accessibility guidelines that make digital spaces navigable for all.

The criteria at this level aim to remove the most blatant barriers that can make a web page completely inaccessible to users with certain disabilities.

By complying with Level A guidelines, you have made the first crucial step towards making your web page more user-friendly.

For instance, some Level A criteria require that all images have alt text for screen readers or that all videos have captioning.

These guidelines may seem basic, but lay the foundation for a digitally inclusive environment. Understanding the WCAG level A guidelines is pivotal for any website seeking to be broadly accessible.

2. Level AA: Strong Web Accessibility Criteria & Examples

Advancing from Level A, Level AA sets a more rigorous standard. It includes its own set of unique AA criteria and AA success criteria. If you’re aiming for AA conformance, it’s imperative to understand that Level AA isn’t just a “good to have” but is often the minimum requirement in many legal frameworks.

Here are some Level AA criteria that might be considered:

  • Provision for resizable text
  • The option for voice recognition navigation

By achieving Level AA conformance, you go beyond mere compliance to reach digital excellence. Level AA success criteria are often more technical and exact than Level A’s.

For example, WCAG AA guidelines may require websites to provide sign language interpretations for videos.

WCAG-level AA guidelines build on the fundamentals to create a more comprehensive web accessibility experience.

3. Level AAA: Excellent Web Accessibility Criteria & Examples

Level AAA is the zenith of WCAG levels, demanding the highest accessibility. To reach AAA conformance, websites must meet stringent AAA requirements that are both comprehensive and exhaustive.

These criteria go beyond the basic global standard and intermediate guidelines, focusing on finer details that create an exceptional user experience.

Level AAA success criteria may include:

  • Providing text summaries for audio or video content
  • Customizable background colors for readability

While achieving Level AAA conformance is an admirable goal, it’s essential to recognize that it’s not always practical or necessary for all types of web content. However, striving for Level AAA can demonstrate a genuine commitment to digital accessibility, setting a gold standard for others.

Understanding the WCAG Level AAA guidelines means engaging in a deeply ethical and inclusive practice, ensuring that your web platform is open to everyone, without exception.

WCAG AA vs AAA: Setting the Right Target

Practical Considerations

When striving for optimal web accessibility, it’s crucial to consult accessibility experts who can guide you in setting the right target.

Deciding between Level AA and Level AAA compliance is not just about ticking boxes; it involves a nuanced understanding of your user needs, the nature of your digital content, and legal obligations.

Accessibility experts can perform a comprehensive analysis to determine which level is most appropriate for your website’s requirements.

If you’re serious about meeting and exceeding WCAG compliance, consider hiring a professional website design agency.

They are well-versed in the intricate aspects of accessibility and can help you make informed decisions, be it for Level AA or Level AAA.

Industry Norms

Industry norms significantly influence the choice of conformance level. While some industries may require basic WCAG compliance, sectors like healthcare or government services often aim for higher levels to meet stringent digital accessibility regulations.

Your industry norms can serve as a guide to which WCAG level best suits your organization’s needs.

For those in high-stakes environments where digital accessibility is crucial, aligning with Level AAA might be seen as a best practice. However, achieving Level AA is usually sufficient for most websites and is often considered the industry standard.

Achieving Optimal Web Accessibility

Usability vs. Accessibility

While both terms are often used interchangeably, it’s essential to differentiate between usability and accessibility. Usability focuses on creating a seamless experience for all users, whereas accessibility is more oriented towards ensuring that people with disabilities can effectively navigate and use the website.

Achieving optimal accessibility doesn’t just mean meeting the bare minimum of guidelines; it means going the extra mile to make the entire site accessible to everyone, including those with varied abilities.

A truly accessible site balances usability and accessibility, providing an inclusive digital landscape for all users.

Final Tips

When working towards an accessible web presence, it’s crucial to consider individual success and success criteria as benchmarks for digital accessibility. These benchmarks are not just checkboxes but fundamental principles to guide your web development process.

Meeting each success criterion ensures that you’re complying with guidelines and making your digital content genuinely accessible to all users. Achieving these standards can be challenging, but it’s a worthy investment for ensuring digital accessibility.

Keep pushing your boundaries and constantly reassess your site to ensure it remains accessible in an ever-evolving digital world.

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✨ They Make Design ✨
TMDesign

A team with 10 yrs of experience in branding web design and UI/UX.