Carbonfox Theme for OpenCode

A dark, professional theme for OpenCode based on the Nightfox Carbonfox variant and IBM's Carbon Design System.

Preview

Features

• True Carbonfox colors - Authentic palette from nightfox.nvim
• WCAG AA compliant - All text meets 4.5:1+ contrast ratio
• Cool-toned aesthetic - Teals, magentas, and pinks (no warm oranges/yellows)
• Full dark/light mode - Both modes properly designed
• 89 theme properties - Complete coverage of all OpenCode UI elements
• Vibrant diffs - Clear red/green with proper backgrounds
• Professional typography - Optimized for extended coding sessions

Installation

One-liner

curl -fsSL https://raw.githubusercontent.com/devatnull/opencode-carbonfox-theme/main/install.sh | bash

Manual

mkdir -p ~/.config/opencode/themes
curl -o ~/.config/opencode/themes/carbonfox.json \
  https://raw.githubusercontent.com/devatnull/opencode-carbonfox-theme/main/carbonfox.json

Then add to ~/.config/opencode/opencode.json:

{
  "theme": "carbonfox"
}

Restart OpenCode or use /theme to switch.

Color Palette

Backgrounds (Grayscale Ladder)

Token	Hex	Use
bg0	#0d0d0d	Deepest
bg1	#161616	Main background
bg2	#1e1e1e	Panels, code blocks
bg3	#262626	Hover states
bg4	#303030	Active, borders

Syntax Colors (Official Carbonfox)

Token	Hex	Use
Red	#ee5396	Tags, errors
Green	#25be6a	Strings
Yellow	#08bdba	Types (teal!)
Blue	#78a9ff	Functions, imports
Magenta	#be95ff	Keywords
Cyan	#33b1ff	Primary, identifiers
Orange	#3ddbd9	Numbers (teal!)
Pink	#ff7eb6	Booleans, accents

Status Colors

Status	Hex	Note
Error	#ee5396	Pink (Carbonfox style)
Warning	#f1c21b	Amber (universal)
Success	#25be6a	Green
Info	#78a9ff	Blue
Hint	#3ddbd9	Teal

Accessibility

All foreground colors tested against #161616 background:

Element	Contrast	WCAG
Main text	15.4:1	AAA
Secondary text	8.2:1	AAA
Comments	4.6:1	AA
All syntax colors	>7:1	AAA

Compatibility

• OpenCode 1.0+
• Platforms: macOS, Linux, Windows
• Terminal: Requires 24-bit true color ($COLORTERM=truecolor)

Why Carbonfox?

Carbonfox is unique because it replaces traditional warm yellows/oranges with teals from IBM's Carbon Design System. This creates a cohesive cool-toned palette that's:

• Easier on the eyes during long sessions
• More visually distinct between token types
• Professionally elegant without being boring

Changelog

v2.3.0

• Fixed comment contrast (WCAG AA compliant)
• Improved selection visibility
• Better token differentiation (booleans, constants, operators)
• Decorators and imports now distinct from keywords

v2.2.0

• Official Carbonfox palette (teals instead of yellows)
• Pink/magenta emphasis matching nightfox.nvim

v2.1.0

• Clean grayscale backgrounds (no blue tint)
• Organized theme structure

v2.0.0

• Complete rewrite with all fixes from deep analysis
• Light mode support
• WCAG compliance

Credits

• Nightfox.nvim by EdenEast - Original Carbonfox palette
• IBM Carbon Design System - Color tokens and design principles
• OpenCode - The AI coding agent this theme is for

License

MIT License - See LICENSE

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