Accessible by Default.

Building for everyone: screen readers, keyboard navigation, color contrast. AI makes accessibility easier, not harder.

After this lesson you'll know

What web accessibility actually means and who it helps
The 5 accessibility rules that cover 90% of issues
How to tell AI to build accessible apps from the start
How to test your app for basic accessibility

Why This Matters

One in four adults has a disability. Build for them too.

Accessibility means making your app usable by everyone — including people who are blind and use screen readers, people with limited hand mobility who navigate with keyboards, people who are colorblind, people with low vision, and people with cognitive disabilities.

This is not charity. This is good design. The curb cut on a sidewalk was designed for wheelchairs, but it helps everyone — parents with strollers, travelers with luggage, delivery workers with carts. Accessible design makes apps better for all users.

And here is the thing about vibe coding: it is actually easier to build accessible apps with AI than without it. AI knows the accessibility rules. You just have to ask.

The Rules

5 accessibility rules that cover 90% of issues.

Rule 1: All images need alt text

Every image should have a text description that a screen reader can read aloud. Tell AI: "Add descriptive alt text to all images." Instead of alt="image1" use alt="A golden retriever running through a park."

Rule 2: Everything must work with just a keyboard

Some people cannot use a mouse. They navigate with Tab, Enter, and arrow keys. Tell AI: "Make sure all interactive elements are keyboard accessible with visible focus indicators." Then test by pressing Tab through your entire app.

Rule 3: Color is not the only way to convey information

If a field turns red to show an error, also add a text message like "This field is required." Colorblind users cannot see the red. Tell AI: "Never rely on color alone to communicate information. Always pair color with text or icons."

Rule 4: Text needs enough contrast

Light gray text on a white background is hard to read for everyone, impossible for people with low vision. Tell AI: "Ensure all text meets WCAG AA contrast ratio of at least 4.5:1." AI knows the math — you just need to ask.

Rule 5: Forms need proper labels

Every input field needs a label that tells screen readers what the field is for. Placeholder text is not enough. Tell AI: "Add proper HTML labels to all form inputs, not just placeholder text."

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