Accessibility and Inclusive Design

More than one billion people in the world — about 15% of the planet's population — have some form of disability. That means if you're designing a digital product without considering accessibility, you're excluding a massive segment of people.

But accessibility isn't only about people with permanent disabilities. Think about yourself holding your phone with one hand while carrying a bag in the other. Or being outside in bright sunlight and barely able to see the screen. Or being in a noisy place and unable to hear a video. We all experience temporary or situational limitations.

Inclusive Design isn't just a moral obligation — it's also smart business.

What's the Difference Between Accessibility and Inclusive Design?

The two terms overlap, but there's an important distinction:

Accessibility means that a product can be used by people with disabilities. It typically follows specific standards like WCAG.

Inclusive Design is a broader philosophy that says: design from the start for the largest possible number of people. You're not trying to "fix" the product after it's built — you're designing it from the beginning to be inclusive.

Microsoft explains it beautifully:

"When we design for someone with one arm, we also benefit the mother holding her baby and the chef with their hands full."

This is what they call the Inclusive Design Methodology — starting by designing for the hardest cases (permanent disability) means the solution benefits everyone:

Permanent: a person who lost an arm
Temporary: a person with a broken arm
Situational: a person holding a child

Types of Disabilities in the Digital Context

1. Visual Impairment

Total blindness: the user relies on Screen Readers like VoiceOver or NVDA
Low vision: needs text enlargement and high color contrast
Color blindness: about 8% of men have some degree of color blindness

2. Hearing Impairment

Deafness: needs text captions for videos and audio content
Hard of hearing: needs volume control and audio clarity

3. Motor Impairment

Paralysis or limited mobility: uses keyboard only or assistive devices
Hand tremors: needs large buttons and sufficient spacing between interactive elements

4. Cognitive and Neurological Disabilities

Dyslexia: needs clear fonts and simple formatting
ADHD: needs reduced distractions and focus on important content
Epilepsy: certain animated visual patterns can trigger seizures

WCAG — The Global Guide to Accessibility

WCAG (Web Content Accessibility Guidelines) are the international standards developed by W3C for digital accessibility. These standards are organized around 4 core principles — abbreviated as POUR:

1. Perceivable

Content must be perceivable by users in some way:

Alt text for images: every image must have an alt text describing its content
Captions for video: Captions and Transcripts
Sufficient color contrast: text must be legible against the background (minimum contrast ratio of 4.5:1 for normal text)
Don't rely on color alone: if you use red for errors, also include an icon or text

2. Operable

Users must be able to interact with all interface elements:

Keyboard navigation: everything you can do with a mouse, you must be able to do with a keyboard
Sufficient time: if there's a timer or timeout, the user must be able to extend it
Avoid flashing content: fast flashes can cause epileptic seizures (fewer than 3 flashes per second)
Clear headings: every page must have a descriptive title

3. Understandable

Content and interactions must be understandable:

Clear language: use simple, direct language
Predictable behavior: elements should work the way the user expects
Useful error messages: "An error occurred" is not helpful. "Email address is invalid — make sure it contains @" is much better
Input assistance: clear labels and understandable instructions

4. Robust

Content must work with various assistive technologies:

Correct, well-structured HTML: use the right tags (h1, h2, nav, main, etc.)
ARIA roles: when HTML isn't enough, use ARIA roles and attributes
Compatibility: test across different browsers and Screen Readers

WCAG Levels

The standards have 3 levels:

Level A: the minimum — you must achieve this
Level AA: the required level — this is the standard most laws demand
Level AAA: the ideal level — not always achievable for all content

Practical Tips for Inclusive Design

Colors and Contrast

Don't rely on color alone to convey information. For example, in forms, don't just make the field red — add an error icon and a text message
Use a contrast checking tool: WebAIM Contrast Checker or a Figma plugin like "Stark"
Test for color blindness: simulation tools like Color Oracle show you what colors look like with color blindness

Text and Content

Font size of at least 16px for body text
Line height of at least 1.5
Clear fonts: avoid decorative fonts for main content
Short paragraphs: don't write long paragraphs. Break content up with subheadings
Simple language: avoid complex terms where they aren't necessary

Buttons of sufficient size: at least 44x44 pixels (Apple standard) or 48x48 (Google standard)
Clear Focus States: when the user navigates by keyboard, they must clearly see where they are
Skip Links: a link at the top of the page that lets keyboard users skip Navigation and go directly to main content
Logical order: the order of elements in code must match the visual order

Images and Media

Descriptive Alt Text: "Image 3" is not helpful. "A UX designer creating a Wireframe on a whiteboard" is much better
Empty alt for decorative images: if the image is purely decorative, use alt="" so the Screen Reader skips it
Captions for videos: not just for the deaf — 80% of people watch social media videos without sound
Transcripts: a complete text version of audio and visual content

Forms

Labels associated with fields: every input must have a label linked to it with the for attribute
Clear error messages: specify what the problem is and how the user can fix it
Logical grouping: use Fieldsets to group related fields
AutoComplete: enable autocomplete attributes so the browser can help the user

Testing Accessibility

Automated Tools

axe DevTools: a browser extension that checks for Accessibility issues
WAVE: a free tool from WebAIM
Lighthouse: Google's tool built into Chrome DevTools
Stark: a Figma plugin that helps you audit your design

Manual Testing

Automated tools catch only about 30–40% of accessibility issues. You also need to do manual testing:

Keyboard navigation: put away the mouse and try using the site with only the keyboard (Tab, Enter, Space, Arrow keys)
Screen Reader: try VoiceOver (Mac) or NVDA (Windows) and observe the experience
Screen zoom: zoom in to 200% and check if content is still readable and organized
High Contrast Mode: enable High Contrast Mode and see if the design still works

Testing with Real Users

Most importantly: test with people who have actual disabilities. No tool or simulation can replace real lived experience. There are communities and organizations that can help you find participants.

The Legal and Business Case

Laws

Many countries have laws requiring accessibility:

ADA (Americans with Disabilities Act) in the US
EAA (European Accessibility Act) in Europe — enforcement begins in 2025
Section 508: for US government websites

Companies that don't comply face lawsuits. Domino's Pizza was sued because its app was inaccessible to blind users.

Business Benefits

Larger market: one billion people with disabilities + their families = massive purchasing power
Better SEO: many accessibility practices (like alt text and structured headings) improve your search engine ranking
Better experience for everyone: inclusive design improves the experience for all users, not just those with disabilities
Better reputation: companies that care about accessibility build greater trust with their audience

Inspiring Examples

Apple

Apple is among the first companies to embed Accessibility as a core part of its products. VoiceOver is available on every Apple device, Magnifier turns the camera into a magnifying glass, and Switch Control allows people with severe motor impairments to control the device.

Xbox Adaptive Controller

Microsoft designed the Adaptive Controller — a large game controller designed specifically for gamers with disabilities. The design was developed in collaboration with disability organizations and real gamers from the very beginning.

Be My Eyes

The Be My Eyes app connects blind users with sighted volunteers via video call. The blind user points their camera and the volunteer describes what they see. This is an excellent example of using technology to solve a real problem.

How to Get Started

1. Learn the Basics

Read the WCAG Quick Reference
Take a free course from W3C on edX

2. Audit Your Current Project

Run axe DevTools or WAVE on your site
Try keyboard navigation
Check your contrast ratios

3. Start with High-Impact Issues

Don't try to fix everything at once. Start with the most impactful:

Alt text for images
Sufficient color contrast
Keyboard navigation
Labels for forms

4. Make It Part of Your Process

Accessibility isn't something you add at the end — it must be part of every phase: from design to development to testing.

Conclusion

Accessibility and inclusive design aren't luxuries and aren't just legal obligations — they are a moral responsibility and a business opportunity. When you design for everyone, you create a better product for everyone.

Take one step today: open your site and put away the mouse. Try using it with the keyboard only. What you discover will change your perspective on design forever.