Very fond of Ayu Dark as it comes with Beautiful UI and especially Material Ocean High Contrast which I am using now. Depends on the screen since I change displays often for work, leisure, travel, etc. Samples follow (in order):


However, I have been known to step over to the bright side from time to time. On these special occasions, I might be caught dead rocking Quiet Light. Used often at work and works out when I want to paste code into emails while keeping some formatting, but not the background. Also, if I feel tired because everything on my work laptop is dark and my job is boring, this lends to... keeping me up.

All three of these check all my boxes. Had actually been a while since I thought about my theme, so I'm glad to have rediscovered an old favorite (namely, Material Ocean High Contrast). Colors are truly just on point.
Material Icons for all themes (first screenshot does not show this, however), and the font used is the free and open-source Fira Code with ligaments in case you didn't recognize... Curious about other fonts that may fit nicely.