I use Dracula color scheme along with the Cascadia Code font [1]. I've been using this set up in both VSCode for Rust and Java in IntelliJ. I find this combination to be extremely readable. Dracula uses many very different colors which make different parts of code obvious. Cascadia has unique shapes for many of the characters which makes distinguishing them a breeze. Would definitely recommend giving this combo a shot!
[1] https://github.com/microsoft/cascadia-code