I prefer my background dark so light colorschemes are not really an area I've explored seriously. Also, dark colorschemes are much easier to design than light ones due to the disproportionate amount of light a white, say, background emits compared to the amount emitted by text. It dramatically reduces the number of colors you can use.
We have many millenia of books using black text on a white background with various colors added, why are computer monitors all of a sudden so special and annoying
- Apprentice, a low-contrast colorscheme I made years ago and used for a long time: https://github.com/romainl/Apprentice.
- Malotru, my curent colorscheme, more contrasted: https://github.com/romainl/vim-malotru.
- Dichromatic, for colorblind users: https://github.com/romainl/vim-dichromatic.
- Bruin, which only uses typography: https://git.sr.ht/~romainl/vim-bruin