# Color Blind & Low Vision Simulator

> 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.

Canonical page: [https://chrome-stats.com/d/colorblindfyi](https://chrome-stats.com/d/colorblindfyi)

## Overview

- **ID:** `colorblindfyi`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** xirclebox
- **Category:** web-development
- **Daily users:** 17
- **Version:** 2.0.1
- **Last updated:** 2026-03-05
- **First published:** 2026-03-02
- **Size:** 35 KB
- **Data as of:** 2026-09-15
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/colorblindfyi/)
- **Website:** [https://colorblind.fyi](https://colorblind.fyi/)

## Description

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)

## Rankings

- #26,634 — Overall
- #52 — tunneling
- #233 — color

## Permissions and access

### Permissions

- `activeTab`
- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [Color Blindness Simulator1](https://chrome-stats.com/d/color-blindness-simulator1)
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- [Achromafox](https://chrome-stats.com/d/achromafox) — 5 users, 3.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/colorblindfyi)