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Design & ValidateToolOpen sourceFree
Color Oracle
An open-source full-screen color-vision simulator that runs independently of art and engine tools on Windows, macOS, and Linux.
Visit official siteContent updated Jul 31, 2026Automated check reached the official site · Checked Aug 24, 2026
Why use it
Designers can quickly expose color-only states, low-distinction UI, and gameplay elements that are hard to tell apart.
Where it fits
Use prototypes and playtests to find core experience problems while they are still cheap to fix.
accessibilityvisual-design
What to check
Simulation is approximate and the application updates slowly; it does not replace contrast measurement or testing with color-impaired players.