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Colour blindness check
Do these two colours still read apart to a colour-blind reader?
The pair you are relying on, put through the three dichromacies, with the contrast between them measured in each. The failure this catches is a red and green status chip that become the same swatch.
- protanopia, no red cones #535460 / #8d8c26 2.1:1
- deuteranopia, no green cones #4b4065 / #98a526 3.48:1
- tritanopia, no blue cones #1d7174 / #d32626 1.11:1
how to use it
- Give the two colours you are using to mean different things.
- Read the simulated pair for each of the three dichromacies.
- A contrast under about 1.5:1 in any row means the two states are indistinguishable.
what this page cannot do
Two swatches are not a page. The extension applies the same simulation to the whole live page, so a chart legend, an icon and a focus ring are judged where they actually sit.
Preferences in the panel Does this page answer the preferences my browser is asking for?
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