General
PromptBeginner5 minmarkdown
Tools: WebAIM Contrast Checker
browser DevTools
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General
PromptBeginner5 minmarkdown
| Moderate | Difficult but usable | Inconsistent navigation
unclear error messages | Next release |
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General
PromptBeginner5 minmarkdown
+-- Role: What IS this element? (role=dialog
role=tab)
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General
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+-- State: What condition? (aria-expanded
aria-checked)
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General
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| +-- YES: Use HTML (<button>
<nav>
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General
PromptBeginner5 minmarkdown
| Critical | Blocks access entirely | No keyboard focus
empty buttons
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General
PromptBeginner5 minmarkdown
| Serious | Major barriers | Poor contrast
missing form labels
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General
PromptBeginner5 minmarkdown
- Best practice
not requirement
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General
PromptBeginner5 minmarkdown
Accessibility Testing Superpower
---
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General
PromptBeginner5 minmarkdown
axe-core: 0 critical violations
0 serious violations
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General
PromptBeginner5 minmarkdown
where L1 = lighter luminance
L2 = darker luminance
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General
PromptBeginner5 minmarkdown
4. Test tables (T key
arrow keys within table)
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General
PromptBeginner5 minmarkdown
5. Test forms (F key
complete form submission)
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General
PromptBeginner5 minmarkdown
Radio: [label]
radio button
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General
PromptBeginner5 minmarkdown
Combobox: [label]
combobox
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General
PromptBeginner5 minmarkdown
1. Navigate entire page with Tab key
listening to announcements
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General
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Checkbox: [label]
checkbox
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General
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Link: [text]
link
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General
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Button: [label]
button
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General
PromptBeginner5 minmarkdown
[ ] Arrow keys navigate within components (tabs
menus
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General
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[ ] Focus indicator visible (${focus_indicator_width:2}px+ outline
3:1 contrast)
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General
PromptBeginner5 minmarkdown
description: Tests and remediates accessibility issues for WCAG compliance and assistive technology compatibility. Use when (1) auditing UI for accessibility violations
(2) implementing keyboard navigation or screen reader support
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General
PromptBeginner5 minmarkdown
| A | Minimum baseline | Missing alt text
no keyboard access
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General
PromptBeginner5 minmarkdown
| ${wcag_level:AA} | Standard target | Contrast < 4.5:1
missing focus indicators
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