Fathom

Fathom is a dark, low-contrast color theme built around one idea: distinction without distraction. Desaturated blue-greens, muted olives, and silver give you enough visual structure to navigate your work — without the jarring accent colors that pull focus away from it.

Sophisticated and intentional, but not prescriptive. No iconic palette to recognize, no aesthetic to perform. Just a calm environment that gets out of your way.

Made for lovers of the deep — work, ocean, or soul.

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Palette

Role	Hex
Background	#323D44
Foreground	#C0C0C0
Cursor	#C1C1C1
Black	#4D5355
Red	#949B79
Green	#88908E
Yellow	#99926B
Blue	#7A8280
Magenta	#999999
Cyan	#AAAAAA
White	#C0C0C0

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Neovim

Requires Neovim 0.8+ with termguicolors.

Install

Manual:

mkdir -p ~/.config/nvim/colors
cp neovim/colors/fathom.lua ~/.config/nvim/colors/

Then in your init.lua:

vim.cmd('colorscheme fathom')

Via lazy.nvim:

{
  dir = '~/path/to/fathom/neovim',
  name = 'fathom',
  config = function()
    vim.cmd('colorscheme fathom')
  end,
}

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Ghostty

Requires Ghostty.

Install

cp ghostty/fathom ~/.config/ghostty/themes/fathom

Then in your Ghostty config:

theme = fathom

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Bullet Train (Zsh)

Requires Bullet Train and oh-my-zsh.
For best results, pair with the Ghostty theme so terminal colors match.

Install

Source the theme file from your .zshrc, after your Bullet Train config block:

source path/to/fathom/bullet-train/fathom.zsh

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Mailspring

Requires Mailspring.

Install

1. Clone or download this repo
2. Open Mailspring → Preferences → Appearance → Theme → Install a theme manually...
3. Select the mailspring/ folder

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Slack

Install

1. Open Slack → Preferences → Themes
2. Scroll to the bottom and click "Custom Theme"
3. Paste this string:

#323D44,#3A454D,#4D5355,#C0C0C0,#3A454D,#AAAAAA,#88908E,#949B79

Slot	Color
Sidebar BG	#323D44
Menu BG Hover	#3A454D
Active Item	#4D5355
Active Item Text	#C0C0C0
Hover Item	#3A454D
Text	#AAAAAA
Active Presence	#88908E
Mention Badge	#949B79

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Obsidian

Requires the Minimal theme.

Install

1. Install Minimal in Obsidian → Settings → Appearance → Themes
2. Copy obsidian/fathom.css into your vault's .obsidian/snippets/ folder
3. Enable it in Settings → Appearance → CSS snippets

The snippet covers backgrounds, sidebar, text hierarchy, links, tags, code blocks, callouts, tables, graph view, and syntax highlighting — all using the Fathom palette.

Role	Color
Background	#323D44
Sidebar BG	#2C3740
Elevated Surface	#3A454D
Border	#4D5355
Text	#C0C0C0
Muted Text	#999999
Faint Text	#7A8280
Accent / Links	#949B79
Tags / Highlights	#99926B

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Alfred

Requires Alfred.

Install

Double-click alfred/Fathom.alfredappearance.

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Credits

Theme by @zalary.
Inspired by Yoncé by @minamarkham.