IX · Silent Event Horizon

PLATE · IX · Silent Event Horizon

01The story

Beyond the reach of the stars lies a void with no visible bottom. There is no answer, no direction, and no question worth pursuing. Star bodies are pulled by gravity, light bends at the boundary, and every voice that approaches vanishes into the silent deep. That presence is IX, the Aeon of the Nihility. This theme reduces that presence to its quietest form: the broad darkness is not an empty background but a horizon with density, while the few violet, blue and magenta signals appear only just before they are consumed.

02Where the colours come from

The palette is drawn from the event horizon of a black hole, deep-violet nebulae and distant starlight bent by gravity. Void black absorbs the composition, dark-bound keeps cards and panels legible as separate layers, and gravitational grey traces the bending tracks. Muted violet is the primary signal the instruments can still resolve; eclipse blue enters the independent syntax palette for coordinates and functions; dark star-red is kept for rare anomalies and removed states. The black hole, gravitational lens, bent orbits and two almost extinguished points are original abstract SVG forms; no character artwork, logo, interface asset or official pattern is reproduced.

03How the palette was built

Black, violet-grey and blue-grey build a low-saturation hierarchy so Nihility does not become a generic neon cyberpunk theme. Muted violet stays bright enough for AA contrast on the ground; text on the accent uses void black #100F18 because the initial white-on-violet pairing reached only 4.04:1. Dark star-red is lifted slightly from #A45F91 to #B36A9F so small anomaly signals remain readable on both background and surface. Vim and Codex share a restrained but clearly separated syntax palette of violet, blue, muted magenta and pale grey-white.

04Sources and references

LinkHonkai: Star Rail official website · World section (English)Official public world section for the game, Aeon IX and the Nihility context.It is used only as the official entry point for the setting; no character artwork, logo, interface or other imagery from that page is used on this site.
LinkHonkai: Star Rail official website · World section (Chinese)Official Chinese world section for the game, Aeon IX and the Nihility context.Official source material and Theme Atlas interpretation are recorded separately; the black-hole and event-horizon metaphors are not presented as official game setting.
LinkNASA Science · Black HolesPublic NASA astronomy reference for black holes and event horizons.The black hole, event horizon, gravitational lensing and bent orbits are only Theme Atlas scientific visual metaphors. They are not official Honkai: Star Rail setting details or official graphics; the SVG and colours are an original interpretation.

05Credits and licence

Palette: Theme Atlas editorial team (original derivation)
Text: Theme Atlas editorial team (unofficial fan interpretation)
Graphics: Theme Atlas (original SVG)
Data licence: Palette data released under CC BY 4.0
Illustration licence: All illustrations are original SVGs; no official artwork is used.
Fan-work statement: This theme is an unofficial fan work, made for colour research and interface demonstration only. It is not affiliated with or endorsed by HoYoverse.

This statement applies to every theme in the collection; see the fan-work statement on the about page.

Palette

HEX DATA · 08 COLORS · 7 BASE ROLES · +1 AUX COLOUR

Key colourMuted Violet#8B72B8

Relative luminance

Click a bar to copy its hex value

Background
The silent ground inside the event horizon
Panel
Cards, panels and layers of shadow
Body text
The last presence remaining in the dark
Secondary text
Distant, attenuated secondary information
Border
Bent orbits and structural boundaries
Accent
The primary signal still resolvable
On accent
Dark text on muted violet
Secondary accent
Rare anomalies, deletions and weightless signals

Application preview

Visual preview

PreviewSignal

Report

IX · Silent Event Horizon

Body text uses Faint Light White on the Void Black background; secondary notes use Nebula Grey.

Primary actionSecondary action

Input field · placeholder

Dividers use Gravitational Grey; accent elements use Muted Violet.

BackgroundPage background
PanelCards and sections
Body textHeadings and body
Secondary textCaptions and notes
BorderOutlines and dividers
AccentButtons and focus
On accentLabels on buttons
Secondary accentFlames and alerts

codex - ~/theme-atlasstatic preview

Codex~/theme-atlasworkspace: theme-atlas

You

Refactor the theme resolver to use semantic roles.

Codex

I will update the resolver and preserve the existing palette schema.

Inspecting src/theme.ts · 42ms

src/theme.tstypescript

export function resolveTheme(theme: Theme): PaletteRole {  const roles = theme.palette;  // Preserve semantic roles across formats.  const ready = true;  const hue = 0.84;  return ready ? roles["accent"] ?? theme.fallback;}

src/theme.ts+1-1

@@ resolveTheme semantic mapping

-return theme.palette[0];

+return roles.get("accent") ?? theme.palette[0];

›Ask Codex to continue...Enter to send · Shift+Enter for newline

A static Codex CLI visual illustration; no command or live session is run.

How the colours enter the preview

Hover or focus a swatch to locate its role; click to pin the highlight.

Contrast audit

PASS · WCAG AA

Contrast results for IX · Silent Event Horizon
Pair	Ratio	Target	Result
Body text / background	15.07:1	4.5:1	Pass
Secondary text / background	5.69:1	4.5:1	Pass
Body text / panel	13.70:1	4.5:1	Pass
Text on accent / accent	4.71:1	4.5:1	Pass
Accent / background	4.71:1	3:1	Pass
Border / background	1.57:1	1.2:1	Pass

Dividers use a threshold of only 1.2:1 — they are decorative and carry no text. Every other pair is checked against the WCAG AA body-text standard of 4.5:1.