papercolor‑theme
Light & Dark Vim color schemes inspired by Google's Material Design
...Also gracefully support down to 16 color (4-bit) terminal, which will use terminal native colors. You need to change the terminal colors to PaperColor palette. In 8 color and 4 color terminals, they might lack the necessary variation of colors to express PaperColor look, but seriously let me know if you still use these kinds of terminals. There are many more colors for many additional syntax groups, but they are designed to fall back to these base 16 colors strategically so that it can utilize the terminal native color palette (if configured like above), and also theme designers only need to provide 16 colors for a functional theme.