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README.md

Programming Mono

A sharp, monospace Obsidian theme built for programmers — zero border radius, JetBrains Mono everywhere, and a restrained syntax-inspired accent palette for both dark and light mode.

Author: SATOSprod
License: Proprietary — see LICENSE

Preview

Main

Why Programming Mono?

Most Obsidian themes are built around rounded corners and a proportional UI font, which feels out of place for anyone who spends their day in a code editor. Programming Mono flips that: every corner is square, every font — interface, text, and code — is monospace, and the accent colors are picked to double as a readable syntax-highlighting palette. The result is a vault that looks and feels like an IDE.

Features

  • Full monospace UI — interface, editor text, and code all use JetBrains Mono (falls back to Fira Code, Cascadia Code, ui-monospace)
  • Zero border radius — buttons, tabs, inputs, modals, panes, and scrollbars are all perfectly square
  • Dark and light variants — both built from the same warm, low-contrast neutral palette
  • Four-color accent system — headings H1–H4 each get a distinct accent color, reused consistently across links, tags, and code syntax
  • Syntax-highlighting-aware colors — --code-keyword, --code-string, --code-function, --code-comment, etc. are mapped so inline code and code blocks read like a real editor
  • Flat, minimal chrome — no shadows, no gradients, no rounded pills — just borders and flat fills
  • Custom scrollbars — square, low-profile scrollbars matching the rest of the UI

Requirements

  • Obsidian 1.7.2 or later
  • Works on desktop and mobile

Installation

From Community Themes

  1. Open Settings → Appearance → Themes.
  2. Click Manage next to Themes.
  3. Search for Programming Mono.
  4. Click Install and use.

Manual installation

  1. Download the latest release from the Releases page, or clone the repository:
git clone https://github.com/SATOSprod/programming-mono.git
  1. Copy the theme folder into your vault:
<your-vault>/.obsidian/themes/programming-mono/
├── theme.css
└── manifest.json
  1. Open Obsidian → Settings → Appearance → Themes and select Programming Mono.

Usage

  1. Install the theme using one of the methods above.
  2. Open Settings → Appearance.
  3. Under Base color scheme, choose Dark or Light — Programming Mono ships full support for both.
  4. Under Themes, select Programming Mono.
  5. For the full intended look, pair the theme with a monospace font family such as JetBrains Mono installed on your system — the theme already references it by name and will fall back gracefully if it isn't installed.

Color Palette

Dark mode

Role Color
Background #0e0e0c
Background alt #161614
Code background #0a0a08
Border #282826
Text #b8b6ae
Text high #dedad0
Text low #686660

Light mode

Role Color
Background #f5f4f1
Background alt #ebe9e4
Code background #eeece7
Border #d8d5cd
Text #3a3934
Text high #1c1b18
Text low #8a8778

Accents (shared hues, adjusted per mode)

Accent Used for Dark Light
Accent 1 H1, links, functions, tags #6a9ed4 #4a7fb5
Accent 2 H2, keywords #a07cc8 #8a63a8
Accent 3 H3, strings, properties #89c87c #4f9a44
Accent 4 H4, warnings, important values #c06f6f #b05a5a

Configuration Notes

Element Behaviour
Corners All corner radii (--radius-s/m/l/xl, buttons, tabs, inputs, checkboxes) are forced to 0px
Fonts --font-text-theme, --font-monospace-theme, and --font-interface-theme all resolve to the same monospace stack
Headings H1–H4 use the four accent colors; H1 also gets a bottom border, H6 is uppercased and letter-spaced
Code Inline code and code blocks use a dedicated background with a syntax-colored token set (--code-keyword, --code-string, --code-function, --code-comment, --code-tag, --code-value)
Links Standard links use Accent 1; unresolved internal links use Accent 4
Tags Rendered with Accent 2, a soft tinted background, and a matching border
Buttons Flat, bordered, transparent background; fill with the accent color on hover
Scrollbars Square, theme-matched thumb and track colors for both modes

File Structure

programming-mono/
├── theme.css
├── manifest.json
├── assets/
│   ├── 1.png
│   └── 2.png
├── cover.png
├── LICENSE
└── README.md

How It Works

  1. The theme defines a small set of raw palette variables (--bg, --bg-alt, --bg-code, --border, --text, --accent-1..4) separately for .theme-dark and .theme-light.
  2. Every Obsidian CSS variable (--background-primary, --text-normal, --interactive-accent, --code-*, --h1-color … --h6-color, etc.) is mapped from that small palette, so the whole theme can be re-tuned by editing a handful of values.
  3. A second block of rules forces border-radius: 0 across buttons, tabs, inputs, modals, and panes to enforce the theme's square-corner identity regardless of Obsidian's own defaults.
  4. Syntax-relevant variables (--code-keyword, --code-string, --code-function, --code-comment, --code-tag, --code-value, --code-property) reuse the same four accents so inline code, code blocks, and headings feel visually consistent.
  5. All rules are scoped under .theme-dark and .theme-light, so switching Obsidian's base color scheme swaps the full palette instantly with no extra configuration.

Screenshots

Graph

Notes

License

This project is released under a proprietary license.
Copying source code into other projects is not permitted.
See LICENSE for full terms.

© 2026 SATOSprod