Vestibular Accessible Design Checker

Vestibular accessible design requires a specialized understanding of how digital interfaces interact with the human inner ear and visual processing systems. The VADchecker tool helps you identify problematic design.

Enter two colors to analyze saturation, cognitive comfort, and compliance.

Important Guide

Note: This tool is a helpful assistive guide, but no automation is flawless. Always double-check your palette configurations manually to ensure they support the diverse visual needs of your real-world users. APCA requires more advanced knowledge of how colors work. If you do not have that, your Lc may always read zero.

Interactive Palette Console
How to Extract Colors: Paste any raw HTML or CSS code into the box below. The engine will instantly scan your code, isolate all valid hex colors, and generate a clickable palette you can use for testing.
Foreground / Text Color (Click Swatch for Picker)
Background Color (Click Swatch for Picker)
Preview Text
Replace this placeholder with your own text to test specific words or headings.
WCAG 2.2 Contrast Ratio
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The quick brown fox jumps over the lazy dog.

WCAG AA

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Standard: 4.5:1
Large/Bold: 3:1

WCAG AAA

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Standard: 7:1
Large/Bold: 4.5:1

APCA Engine

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Calculating brain comfort…

Vestibular Strain

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Saturation: 0%

Cognitive Evaluation

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Evaluating…

Formal Audit Report

Design & Accessibility Digest