Dark Themes Vol. 2 · 4 / 12

Biolume

A green accent, #35E0C0, on a #141B1A terminal. Primary text reads at 14.77:1 and secondary text at 7.61:1, measured against that background. Free and MIT licensed, one of the Dark Themes Vol. 2 for Claude Code.

Biolume

#35E0C0
✻ Claude Code · biolume
● Applied theme “Biolume”
  3 files changed · staged
> show me the diff
>theme biolume
/theme  ·  ⏎ send  ·  esc to interrupt

Install Biolume.

Requires Claude Code v2.1.118 or later. The marketplace command is needed once per machine; the plugin command installs the whole Dark Themes Vol. 2 pack, and /theme inside Claude Code switches to this one.

$ claude plugin marketplace add notgabriels-sys/claude-code-50-dark-themes
$ claude plugin install dark-themes-vol-2@notgabriels-themes
$ /theme biolume

Plugin themes are read-only. Press Ctrl+E on one in /theme for an editable copy in ~/.claude/themes/.

Or copy just this file.

One theme, no plugin: fetch plugins/dark-themes-vol-2/themes/biolume.json from the repository into your themes folder. If that folder did not exist when Claude Code started, restart it once.

$ mkdir -p ~/.claude/themes && curl -fsSL https://raw.githubusercontent.com/notgabriels-sys/claude-code-50-dark-themes/main/plugins/dark-themes-vol-2/themes/biolume.json -o ~/.claude/themes/biolume.json

Terminal background: #141B1A.

Claude Code colours its own interface; the terminal application owns the canvas behind it. Every figure below is measured against #141B1A, so set that as the terminal background for the result the numbers describe. On a different background the ratios move.

Palette.

The thirteen overrides Claude Code reads from the theme file. Success, error, warning and diff colours are deliberately not overridden, so status meaning stays the same across every theme in the pack.

ColourTokenRole
#35E0C0claudeClaude's mark and accent
#8AEEDBclaudeShimmerAccent highlight while Claude works
#E8EDECtextPrimary text
#9DAFABinactiveSecondary text
#253431subtleDecorative hairlines (reserved, carries no meaning)
#35E0C0suggestionAutocomplete suggestions
#6FBFB0permissionPermission prompt border and indicator
#35E0C0promptBorderInput prompt border
#8AEEDBpromptBorderShimmerPrompt border highlight
#6FBFB0planModePlan mode indicator
#202A28userMessageBackgroundSurface behind your messages
#293432userMessageBackgroundHoverThat surface, hovered
#35E0C0rate_limit_fillUsage meter fill

Measured contrast.

Computed from the hex values above with the WCAG 2 relative-luminance formula, by the same script that gates every change to this repository. Figures are truncated, never rounded up. Each row meets its floor.

PairColoursRatioFloorStandard
text on terminal background#E8EDEC on #141B1A14.77:17:1WCAG AAA, normal text
text on your-message surface#E8EDEC on #202A2812.47:17:1WCAG AAA, normal text
inactive on terminal background#9DAFAB on #141B1A7.61:14.5:1WCAG AA, normal text
inactive on your-message surface#9DAFAB on #202A286.43:14.5:1WCAG AA, normal text
claude on terminal background#35E0C0 on #141B1A10.46:14.5:1WCAG AA, normal text
claudeShimmer on terminal background#8AEEDB on #141B1A12.76:14.5:1WCAG AA, normal text
suggestion on terminal background#35E0C0 on #141B1A10.46:14.5:1WCAG AA, normal text
permission on terminal background#6FBFB0 on #141B1A8.11:13:1WCAG AA, non-text
planMode on terminal background#6FBFB0 on #141B1A8.11:13:1WCAG AA, non-text
promptBorder on terminal background#35E0C0 on #141B1A10.46:13:1WCAG AA, non-text
promptBorderShimmer on terminal background#8AEEDB on #141B1A12.76:13:1WCAG AA, non-text
rate_limit_fill on terminal background#35E0C0 on #141B1A10.46:13:1WCAG AA, non-text
your-message surface against the terminal#202A28 on #141B1A1.18:11.08:1visibly distinct surface
hovered surface against the resting one#293432 on #202A281.14:11.08:1visibly distinct surface