https://xmpp.org/extensions/xep-0392.html
XEP-0392: Consistent Color Generation
This specification provides a set of algorithms to consistently generate colors given a string. The string can be a nickname, a JID or any other piece of...
consistent colorxep0392generation
https://accessiblepalette.com/
Accessible Palette: Create color systems with consistent lightness and contrast
Use CIELAB and LCh color models to create color systems with consistent lightness and WCAG contrast ratios.
color systemsaccessiblepalettecreateconsistent