Kanagawa — Codex app theme

Kanagawa takes its colors from Hokusai's 'The Great Wave off Kanagawa', and the port keeps the woodblock logic intact: a sumi-ink near-black base, wave-foam text with the yellow of aged paper in it, crystal blue for the accent, and small strikes of hot red where the print would flash. It began as rebelot's Neovim theme, and the palette names read like an inventory of the print itself — sumiInk, fujiWhite, crystalBlue.

The ink metaphor turns out to be a working principle. Text sits on the dark ground the way pigment sits on paper — matte, even, no glow — which makes dense agent output unusually easy to read line by line. Keywords in muted violet and strings in dry green organize a code block without theatrical contrast, and the one hard red is saved for genuine errors, which is exactly where you want your attention spent.

It tends to catch the people who found Tokyo Night too neon and Gruvbox too warm — Kanagawa is the quiet middle with an art-history alibi, and it has earned a devoted following among Neovim users. Its natural habitat is evening: like most ink, the palette goes a little flat under harsh daylight and comes into its own once the room dims to lamplight.