Sidepanel header · Color vision simulation · Free to use
Color vision preview
Apply a local simulation filter to inspect how a page may appear with different color vision conditions, then reset the view.
Maintained by A11y Scan · Updated
Use it in the extension
Open a page whose color-dependent information you want to inspect.
Open Color vision simulation in the sidepanel header, choose a mode, and compare the page's meaningful indicators, charts and controls.
Look for information that depends on hue alone and verify whether text, shape, pattern or another cue also communicates it.
Reset the preview when finished. Test contrast and task usability separately.
What you get
A reversible local visual filter helps you ask better questions about information conveyed by color.