How do dark-themed websites pick their colours?

Look at the kits here: each lists the background, surface, text, muted text, border and accent colours by role, with contrast checked, from real dark websites such as farmjs.dev, linear.app, goatrank.lol, rize.roggy.site, gitstreak.eyu.et and ANDY's taste.

How do I make my app look like one of these?

Open a kit and install it in your coding agent (one paste in Claude Code; unzip for Cursor, Codex or Windsurf). The agent audits your project, asks which areas to change and applies the design one area at a time, so you can review and revert each step.

Theme

Dark website design systems

96 design systems from real dark-themed websites: background and surface colours, text contrast, accents, borders and shadows, measured from the live pages and ready to install for Claude Code, Cursor or Codex.

96 kits

Questions

How do dark-themed websites pick their colours?: Look at the kits here: each lists the background, surface, text, muted text, border and accent colours by role, with contrast checked, from real dark websites such as farmjs.dev, linear.app, goatrank.lol, rize.roggy.site, gitstreak.eyu.et and ANDY's taste.
How do I make my app look like one of these?: Open a kit and install it in your coding agent (one paste in Claude Code; unzip for Cursor, Codex or Windsurf). The agent audits your project, asks which areas to change and applies the design one area at a time, so you can review and revert each step.