Color Blind & Low Vision Simulator by xirclebox
The Color Blind and Low Vision Simulator is an accessibility tool that allows users to test and observe how people with colorblindness or low vision may perceive web-based content.
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
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About this extension
Features:
• Light and Dark modes
• 9 color vision options
• 7 Low vision options
Types of color vision:
• Trichromacy (Normal vision)
• Protanopia (Red-blind)
• Protanomaly (Red-weak)
• Deuteranopia (Green-blind)
• Deuteranomaly (Green-weak)
• Tritanopia (Blue-blind)
• Tritanomaly (Blue-weak)
• Achromatopsia (Complete color blindness)
• Achromatomaly (Partial color blindness)
Types of low vision:
• Mild Blur (Slight vision impairment)
• Moderate Blur (Moderate vision impairment)
• Severe Blur (Severe vision impairment)
• Low Contrast (Reduced contrast sensitivity)
• Cataracts (Cloudy/yellowed vision)
• Tunnel Vision (Loss of peripheral vision)
• Central Vision Loss (Loss of central vision acuity)
• Light and Dark modes
• 9 color vision options
• 7 Low vision options
Types of color vision:
• Trichromacy (Normal vision)
• Protanopia (Red-blind)
• Protanomaly (Red-weak)
• Deuteranopia (Green-blind)
• Deuteranomaly (Green-weak)
• Tritanopia (Blue-blind)
• Tritanomaly (Blue-weak)
• Achromatopsia (Complete color blindness)
• Achromatomaly (Partial color blindness)
Types of low vision:
• Mild Blur (Slight vision impairment)
• Moderate Blur (Moderate vision impairment)
• Severe Blur (Severe vision impairment)
• Low Contrast (Reduced contrast sensitivity)
• Cataracts (Cloudy/yellowed vision)
• Tunnel Vision (Loss of peripheral vision)
• Central Vision Loss (Loss of central vision acuity)
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Permissions and data
Required permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 2.0.1
- Size
- 35.41 KB
- Last updated
- 22 days ago (Mar 2, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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