Extremely poor contrast ratio on mailing list unsubscribe

[pwbriggs]

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I was directed to the GitHub marketing unsubsribe page from the bottom of a recent email advertising Copilot SDK. I unsubscribed, but noticed that, at the bottom of the unsubscribe page was a very faint, thin, light-grey-on-white button labeled "View Opt Out Preferences." It is nearly impossible to read, which is unacceptable. The text contrast ration on that button, according to Firefox devtools, is 1.73, far below any WCAG guideline. Please fix this to make this page more accessible to people with impaired vision or without top-notch monitors. Thanks!

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Looks like the rest of that page also has poor contrast, like this toggle switch with contrast of 3.94:

[github-actions[bot]]

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[queenofcorgis]

@pwbriggs thank you for reporting this, are you able to share the URL of the email and the unsubscribe link so our team can investigate? Thank you!

[pwbriggs]

The URLs seem to only work if they have the correct query parameters, and I won't publish my management portal token. But the URLs look like

• https://mailing.github.com/asm/unsubscribe/?user_id=<redacted>&data=<lots of base64> and
• https://mailing.github.com/asm/?user_id=<redacted>&data=<lots of base64>