Hi @Jasmin Walker ,
What version of OneNote did you use?
I tested in my OneNote version number: 2108 (Build 14326.20136 Click-to-Run) and the White color is more related to very light gray:
You can give a feedback about this behavior in OneNote:
https://support.microsoft.com/en-us/office/how-do-i-give-feedback-on-microsoft-office-2b102d44-b43f-4dd2-9ff4-23cf144cfb11
Microsoft values your opinion. Your feedback goes directly to our engineers and helps us shape the future of Microsoft products and services for all our users.
If you're using Windows 10, as a workaround you can use OneNote for Windows 10:
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