---
title: "Spectrum – Chrome extension stats, history and permissions"
description: "10,000 users, rated 3.77 by 56 people. Version 0.6.0, updated 2024-12-30. Requests 2 permissions."
url: "https://extensiontracker.com/extension/ofclemegkcmilinpcimpjkfhjfgmhieb"
---

# Spectrum

Live in the Chrome Web Store.

- Users: 10,000
- Rating: 3.77 from 56 ratings
- Last checked: 2026-11-12 22:28 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: No change (+0.0%)
- Rank by users: #5,041 of 292,125 live extensions
- Rank in Developer Tools: #442 of 30,444

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Instantly test your web page with different types of color vision deficiency.

- Extension ID: `ofclemegkcmilinpcimpjkfhjfgmhieb`
- Developer: [Yehor Lvivski](https://extensiontracker.com/developer/u3abf88363ecbb8dc1ecc6982e398f51c)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2013-05-22
- Last updated: 2024-12-30
- Version: `0.6.0`
- Size: 21.26 KiB
- Minimum Chrome: 88
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/spectrum/ofclemegkcmilinpcimpjkfhjfgmhieb>
- View its code or download CRX: <https://crxpeek.com/extension/ofclemegkcmilinpcimpjkfhjfgmhieb>
- Search Google for the ID: <https://www.google.com/search?q=%22ofclemegkcmilinpcimpjkfhjfgmhieb%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-12 | 10,000 | 3.77 | 56 |
| 2026-11-05 | 10,000 | 3.77 | 56 |
| 2026-10-29 | 10,000 | 3.77 | 56 |
| 2026-10-22 | 10,000 | 3.77 | 56 |
| 2026-10-15 | 10,000 | 3.77 | 56 |
| 2026-10-09 | 10,000 | 3.77 | 56 |
| 2026-10-02 | 10,000 | 3.77 | 56 |
| 2026-09-27 | 10,000 | 3.77 | 56 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `scripting`: Run scripts on sites it can reach

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-11-12 22:28 UTC; next check around 2026-11-20.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Spectrum” (ofclemegkcmilinpcimpjkfhjfgmhieb). Chrome Web Store data, last checked 2026-11-12. https://extensiontracker.com/extension/ofclemegkcmilinpcimpjkfhjfgmhieb. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_ofclemegkcmilinpcimpjkfhjfgmhieb,
  title   = {Spectrum (ofclemegkcmilinpcimpjkfhjfgmhieb)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-12},
  url     = {https://extensiontracker.com/extension/ofclemegkcmilinpcimpjkfhjfgmhieb},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/ofclemegkcmilinpcimpjkfhjfgmhieb>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.