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Opportunity brief · Nov 4, 2026

Colour Contrast Checker

Check the contrast between different colour combinations against WCAG standards

RevenueNo price in the listingNo price listed
OpportunityNot scoredAn opportunity needs a revenue figure of at least $1k a month.
1–2★ ratingsnot publishedcomplaints from Dec 2022–Nov 2025, 67% in the last 24 months
Build difficultyLowLow: simple browser extension; no payments, regulation, hardware, or network effects; cross-browser reliability is main work.

The pitch, and what the numbers say

Colour Contrast Checker — Accessibility · https://colourcontrast.cc/

No revenue figure: see why on the full x-ray.

Why users leave

The free diagnosis shows the top complaint. The full brief has every cluster, the build ideas and the buyers.

Bugs/Reliability · 67% of complaints read

Extension fails to start or respond on Windows 11, Chrome, MacBook Pro, and Brave; clicking icon does nothing.

“Doesn't work as of windows 11 and Chrome version 10.30.25.”
+ 1 more complaint cluster, with verbatim quotes — in the full brief

What a challenger would build

3 build ideas, each answering a complaint above — in the full brief

Closest alternatives

Who is buying right now

6 buyer threads in the same market in the last 30 days, with links and excerpts in the full brief.

Get the full Colour Contrast Checker brief

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.

How to read this

Sources: the product's public listing and reviews, its published price, and public forum threads. Revenue is an estimate unless marked verified by the founder; the formula and its inputs are on the full x-ray. Complaints are grouped by a language model and each quote is a verbatim excerpt, linked to the original review. Build difficulty is a model's reading of the listing and the complaints, not a measurement. Figures are a snapshot of Nov 4, 2026. Corrections: corrections.

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