Flatnic

Linux · Graphics & Design

Ratio

Validate color contrast

by Mark Wyner

Download

Official site: flathub.org

About Ratio

Ratio uses WCAG algorithms to validate color contrast for accessibility. Specifically for the WCAG Success criteria 1.4.3 (text), 1.4.11 (non-text elements), and 2.4.13 (focus appearance). I made it for myself, but it is also my gift to you. (There’s also a macOS version available.)

How to install Ratio

  1. Click Download — the developer's official website opens in a new tab.
  2. Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
  3. Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub com.markwyner.ratio
  4. Open Ratio once it finishes installing.
How to install Linux apps with Flatpak

Frequently asked questions

Is Ratio free to download?

Yes. The Download button sends you to flathub.org, the developer's official site, where Ratio is available to download. Flatnic doesn't host or modify any files.

How do I install Ratio from the command line?

With Flatpak, run: flatpak install flathub com.markwyner.ratio. This installs it from the official source and keeps it updated.

Is Ratio safe?

Ratio downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.

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