Indicum
“indigo”
urbanlatefocused
A far city at 2am, flat blocks of towers low in the corners of a deep indigo page.
If you like Tokyo Night or Night Owl, you will feel at home here.
Flat blocks of distant towers with small lit windows and red antenna lights in the corners of a navy page. Held still, as it is while you read.
The plate
A deep indigo navy page with a far city low in the two bottom corners, drawn as flat blocks with a lit side and a grid of tiny square windows. A few windows burn warm orange, a few cool cyan, and two antenna masts carry red lights. By day the same towers stand pale blue grey under a cool sky. While Claude works a few windows switch on and off slowly and the antenna lights pulse. When the answer is ready the city holds still.
While Claude works
The spinner takes one of these words in place of “Working”. When the app names the step it is on, that name stays.
- Night shift
- Lights on
- Still up
- Working late
- Holding the line
- On watch
After a turn of 20 seconds or more, Indicum plays a soft chime under a second and a half long.
With /tessera music, a quiet loop of its own plays while Claude works and stops when the answer is ready. It is off until you ask for it.
Palette
Light
- Page
#e8edf5 - Card
#edf2f8 - Panel
#f2f6fb - Text
#262f47 - Secondary
#3e4862 - Muted
#55607b
Dark
- Page
#171c33 - Card
#1b2139 - Panel
#20263d - Menu
#262c44 - Text
#dadff1 - Secondary
#bdc3d8 - Muted
#a0a7be
Roles
- Accent
#66a5ff - Danger
#ee6e91 - Success
#5ed8a9 - Warning
#f99549 - Pro
#47d2e8
Measured
Standard contrast. Body text is held at 9:1 to 14:1. Here it measures 11.3:1 in light and 12.6:1 in dark. Vivid accents.
| Reading | Light | Dark |
|---|---|---|
| Body text on the page | 11.3:1 | 12.6:1 |
| Muted text on the page | 5.3:1 | 7:1 |
| Page lightness | 94% | 23% |
| Glass | 68%, 20 pt blur | 68%, 20 pt blur |
Contrast is the WCAG ratio. Muted text is held at 4.5:1 or better. Lightness is OKLCH, where 0% is black and 100% is white.
Install
Hang Indicum
-
1 In the desktop app
Click + next to the prompt box and choose Plugins. Add the marketplace btahir/tessera, then add the tessera plugin.
btahir/tessera -
2 In a terminal session
Paste this at the prompt.
/plugin install tessera --marketplace btahir/tessera -
3 Ask Claude
Send this sentence in any session.
Install the tessera plugin from the btahir/tessera marketplace on GitHub.
Then
The tessera plugin holds all twenty-five plates.
Type /tessera indicum to hang Indicum.
/tessera still stops the motion. Sound has three levels: /tessera quiet is silence,
/tessera sound is a chime after long turns (the default), and /tessera music adds the room's own
quiet loop while Claude works. Your choices are kept across sessions.
Only Indicum
Each plate also installs by its own name, and its commands use that name, such as /indicum still or /indicum music.
/plugin install indicum --marketplace btahir/tessera Where it shows
Themes appear in the Claude Code desktop and mobile apps. The terminal keeps its own colors. The chime plays on macOS only.