why-you-should-never-use-pure-black-for-text-or-backgrounds
https://uxmovement.com/content/why-you-should-never-use-pure-black-for-text-or-backgrounds/
[...]
accessible
5 KEYS TO ACCESSIBLE WEB TYPOGRAPHY
https://betterwebtype.com/articles/2019/06/16/5-keys-to-accessible-web-typography/
[...]