If the background color is conveying important information, make sure to use a contrasting minimum for optimal readability

I have an image icon with a green background and a white checkmark inside symbolizing 'pass' status. My question is, does the green color need to have a 3:1 contrast ratio with the white background outside of the image, and does the white checkmark need to have enough contrast with the green background? Or is it sufficient if the white checkmark meets the minimum contrast requirement against the green background? P.S: This image is just a placeholder and the final colors and design are subject to change.

https://i.sstatic.net/d3BcW.png

csscolorsaccessibilitywcagcontrast

Answer №1

Absolutely, your icon is indeed considered as part of a control element.

It falls under the guidelines of Success Criterion 1.4.11: Non-text Contrast

Technique G207 provides comprehensive information on this topic. In essence, a contrast ratio of 3:1 with its surroundings is not mandatory but recommended, while a contrast ratio of 3:1 between the icon and its background is crucial.

Furthermore, for clarity purposes, it's important to use different icons for different statuses, like avoiding relying solely on colors for conveying meanings as some individuals may be color blind (I'm sure you are already aware of this, but just wanted to reiterate after reading your question about the green color indicating success status).

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