Everforest Dark — Claude Code theme

Everforest is built on a single bet: that green is the easiest color family for human eyes to rest in. Its author sainnhe — also behind Gruvbox Material — kept saturation and contrast deliberately low, tinted the dark base toward green, and pulled every accent into the forest: sage strings, moss-green functions, and a red soft enough to read as autumn leaf rather than alarm.

Over a long agent session the bet pays off. Nothing in the palette spikes, so a five-hour run of prompts, plans and patches leaves less of that end-of-day eye grit than crisper themes do. The cost is part of the design: in bright rooms the low contrast can feel underpowered, and the gentle red means a failed command doesn't jump the way it does in GitHub Dark. Comfort first, urgency second — know which one your work needs.

Upstream ships hard, medium and soft contrast levels plus a light mode, so you can tune how far the coziness goes. And it picks a temperament as much as a lighting condition: if your setup already leans warm — wooden desk, paper notebook, a plant you actually water — this is the theme that agrees with the room.