macOS · Color Calibration

Precision color patches.
Native. Exact. Accurate.

PatternSpace renders hardware-accurate color calibration patterns on any macOS display. HDR-ready, sandboxed, zero dependencies.

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v0.2.0 · macOS 15+ · Apple Silicon & Intel · Professional Edition

ColourSpace 192.168.1.42:20002

09:14:22 [ColourSpace] Connected from 192.168.1.42

09:14:24 [ColourSpace] Patch #1 received — 100% green

09:14:26 [ColourSpace] Patch #2 received — 50% red

09:14:28 [ColourSpace] Patch #3 received — D65 white

09:14:30 [ColourSpace] Patch #4 received — 18% gray

Why PatternSpace

Built for the
calibration professional

Every pixel matters in display calibration. PatternSpace is engineered from first principles for accuracy — Metal EDR pipeline, full HDR headroom, zero drift.

Metal EDR Pipeline

16-bit per channel rendering via rgba16Float CAMetalLayer. Full HDR headroom on Pro Display XDR and compatible monitors.

Multi-Monitor Support

Target any connected display. Automatic fallback when your calibration display disconnects. Per-display ICC profile diagnostics.

Real-time Session Metrics

Live patch count, session duration, average patch timing, and connection status. Everything you need to monitor a calibration run at a glance.

ColorSync Toggle

Switch between ICC-managed wide-gamut rendering and raw device code values in one click. Critical for accurate native panel response measurements.

Strict App Sandbox

Incoming connections only — all outgoing network traffic is blocked. No camera, microphone, Bluetooth, or location access. Security by design.

100+ Pattern Library

GPU-rendered patterns across 6 categories: Color, Checks, Geometry, Swatch, Gamma, and Clipping. PNG thumbnails for every pattern.

Calibration Protocols

Works with your
existing software

PatternSpace supports the three most common professional calibration protocols — connect via any workflow you already use.

ColourSpace

Connect via ColourSpace's built-in Network Server. PatternSpace auto-discovers on the local network — no manual IP entry needed.

LightIllusion

CalMAN

Configure CalMAN's Unified Pattern Generator Control Interface (UPGCI) to connect. PatternSpace listens passively — just point CalMAN at your Mac's IP.

Portrait Displays

PGenerator

Full emulation of the PGenerator network protocol. Any software that supports PGenerator as a target will connect automatically via network discovery.

Full Emulation

Network Architecture

Calibration Software

ColourSpace · CalMAN · PGenerator

↓ Local Network · Auto-discovery

PatternSpace · macOS

Listening · Single client · Sandboxed

↓ GPU · vsync-locked · no drift

Output Display

Full-screen patch window · Above all apps

Color Depth

16-bit

HDR Headroom

Up to 16×

Wide Gamut

BT.2020

ColorSync

Toggleable

Technical Specifications

Engineered for
measurement accuracy

Color Accuracy

Channel depthUp to 16-bit per channel

HDR headroomUp to 16× (Pro Display XDR)

Wide gamutBT.2020 · DCI-P3 · sRGB

ColorSyncToggle ICC on / bypass for raw device values

Patch renderingGPU · vsync-locked · no drift

Display

SystemmacOS 15+ · Apple Silicon & Intel

Multi-monitorAny connected display — internal or external

Patch windowFull-screen · above all apps

Same-display modeMenu bar collapse + HUD overlay

Display sleepSuppressed during active session

Compatibility

ColourSpaceLightIllusion · Network Server

CalMANPortrait Displays · UPGCI

PGeneratorFull protocol emulation

Local pattern library100+ GPU-rendered patterns

Security Profile

App Sandbox — fully sandboxed macOS app

Incoming connections allowed — necessary for calibration protocols

Outgoing connections blocked — no phoning home, ever

Camera & microphone — no access

Location & Bluetooth — no access

File system — read-only, user-selected files only

Pattern Categories

Color

Checks

Geometry

Swatch

Gamma

Clipping

Precision color patches.Native. Exact. Accurate.

Built for thecalibration professional