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Top 23 CSS dark-theme Projects
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Project mention: µCSS: I built a full-featured CSS framework on top of PicoCSS | dev.to | 2026-03-11
I ended up choosing PicoCSS. It's beautiful, semantic, accessible, and weighs only 11KB. Most HTML elements look great with zero CSS classes. For simple projects, it's perfect.
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I use the Minimal theme with its companion settings plugin. The name is accurate. It strips back the visual chrome, improves typography, and keeps the focus on the content. I've turned off most of the optional visual styles and left it close to its defaults.
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halfmoon
Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components.
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obsidian
Comfy, playful but productive theme for Obsidian. "Primary instantly puts you in a relaxed state that opens the door to creativity and exploration. Wonderfully executed down to the smallest details,"
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Yin-and-Yang-Theme
An Obsidian.md theme with a stark contrast between dark mode and light mode, much like the Yin and Yang symbol ☯️.
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Tokyo-Night-Linux
Dark theme for i3+polybar, sway+waybar, rofi, GTK, spotify and Discord based on the Tokyo Night vscode theme
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elementaryos-firefox-theme
This theme for Firefox supports all the window buttons layouts from Tweaks and it blends into the elementary OS user interface.
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YouTube-DeepDark
Videos should only be watched in the dark. May the dark be kinder on thine eyes. (YouTube dark theme)
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typora-github-night-theme
Dark Typora themes that reproduce the new GitHub Dark Themes as much as possible.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
CSS dark-theme discussion
CSS dark-theme related posts
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Why Tailwind Won (And What That Means for Traditional CSS) 🐍
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Ask HN: Favorite CSS / component framework for web admins?
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The Missing CSS Stylesheet
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Pico CSS: Minimal CSS Framework for Semantic HTML
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Thank You Bootstrap 1
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PicoCSS – CSS Framework for Semantic HTML, Classless Option, Extensible via SASS
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Model Predictive Control in the Browser with WebAssembly
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A note from our sponsor - SaaSHub
www.saashub.com | 5 Jun 2026
Index
What are some of the best open-source dark-theme projects in CSS? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | pico | 16,639 |
| 2 | GitHub-Dark | 9,907 |
| 3 | obsidian-minimal | 5,122 |
| 4 | halfmoon | 3,125 |
| 5 | theme.park | 3,054 |
| 6 | Sweet | 1,687 |
| 7 | obsidian | 1,594 |
| 8 | gtk | 1,050 |
| 9 | Ultrachromic | 957 |
| 10 | obsidian-things | 928 |
| 11 | Matcha-gtk-theme | 801 |
| 12 | StackOverflow-Dark | 690 |
| 13 | shimmering-focus | 635 |
| 14 | Yin-and-Yang-Theme | 561 |
| 15 | Tokyo-Night-Linux | 510 |
| 16 | Wikipedia-Dark | 489 |
| 17 | Firefox-UWP-Style | 453 |
| 18 | elementaryos-firefox-theme | 441 |
| 19 | rocketchat-dark-mode | 367 |
| 20 | Windows-10-Dark | 342 |
| 21 | typora-ladder-theme | 270 |
| 22 | YouTube-DeepDark | 255 |
| 23 | typora-github-night-theme | 226 |
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