Yahoo Mail (desktop webmail) turns very light shades of grey like #fffffe, #feffff or #fffeff (often used to avoid Apple Mail's automatic dark mode) into very vivd colors.
Here's the code from the above example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Yahoo</title>
</head>
<body>
<table bgcolor="#fffffe">
<tr>
<td>
Lorem ipsum dolor sit amet consectetur adipisicing elit. Placeat, excepturi odit quod iusto ipsa nulla maiores consequuntur possimus quisquam, dolore, atque libero iure doloremque mollitia eius accusamus? Temporibus doloremque, error.
</td>
</tr>
</table>
<table bgcolor="#fffeff">
<tr>
<td>
Lorem ipsum dolor sit amet consectetur adipisicing elit. Placeat, excepturi odit quod iusto ipsa nulla maiores consequuntur possimus quisquam, dolore, atque libero iure doloremque mollitia eius accusamus? Temporibus doloremque, error.
</td>
</tr>
</table>
<table bgcolor="#feffff">
<tr>
<td>
Lorem ipsum dolor sit amet consectetur adipisicing elit. Placeat, excepturi odit quod iusto ipsa nulla maiores consequuntur possimus quisquam, dolore, atque libero iure doloremque mollitia eius accusamus? Temporibus doloremque, error.
</td>
</tr>
</table>
</body>
</html>
Based on feedback from Lorin in Slack:
Yahoo on desktop doesn’t invert colors like others. If you have #FFFFFE it will darken that color by 70% and reproduce #989800. You can see that test on this link:
https://pinetools.com/darken-color
Yahoo Mail (desktop webmail) turns very light shades of grey like
#fffffe,#feffffor#fffeff(often used to avoid Apple Mail's automatic dark mode) into very vivd colors.Here's the code from the above example:
Based on feedback from Lorin in Slack: