Nox
“night”
clearstillopen
A clear night sky over low hills, with stars gathered at the edges.
A night sky of stars over low hills. Held still, as it is while you read.
The plate
By night the sky is violet indigo, the stars gather toward the corners and a low line of hills rests in the bottom corners. By day it is the hour before sunrise: pale lavender, a thin moon near one corner and the last few stars. While Claude works the stars brighten and dim slowly and now and then a meteor crosses a corner. When the answer is ready the sky 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.
- Stargazing
- Counting stars
- Waiting for dawn
- Tracing the sky
- Watching for meteors
After a turn of 20 seconds or more, Nox 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
#edeaf9 - Card
#f2f0fc - Panel
#f7f6fd - Text
#292440 - Secondary
#47445f - Muted
#57546d
Dark
- Page
#201f34 - Card
#242439 - Panel
#29283f - Menu
#2e2d44 - Text
#dcdcee - Secondary
#bbbbd1 - Muted
#a3a3bb
Roles
- Accent
#8388e0 - Danger
#d46565 - Success
#4ca77b - Warning
#d09945 - Pro
#bc6cab
Measured
Standard contrast. Body text is held at 9:1 to 14:1. Here it measures 12.5:1 in light and 11.9:1 in dark. Calm accents.
| Reading | Light | Dark |
|---|---|---|
| Body text on the page | 12.5:1 | 11.9:1 |
| Muted text on the page | 6.1:1 | 6.5:1 |
| Page lightness | 94% | 25% |
| Glass | 66%, 20 pt blur | 66%, 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 Nox
-
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 nox to hang Nox.
/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 Nox
Each plate also installs by its own name, and its commands use that name, such as /nox still or /nox music.
/plugin install nox --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.