A fast floating HSV and OKLCH companion palette for Clip Studio Paint on Windows.
Purchase link coming soon. The paid Windows release is being prepared for Gumroad. Watch this repository for the launch announcement.
CSP Color Picker sits beside your canvas without interrupting pen focus. It combines a familiar HSV wheel with a perceptual OKLCH wheel, synchronizes color with Clip Studio Paint, and is tuned for responsive mouse and pen-display use.
This repository is the official public information and support hub. It does not contain the proprietary source code or application binary.
- HSV hue/saturation wheel whose appearance follows Value.
- Perceptual OKLCH hue/chroma wheel with Lightness and gamut mapping.
- Low-latency Direct integration for a strictly validated CSP build.
- Automatic compatibility fallback through CSP's docked Color Wheel.
- Smooth coalesced input for mouse, Windows Ink, and Huion tablets.
- CSP-to-picker synchronization after palette or eyedropper changes.
- Resizable picker and numeric HSV, OKLCH, RGB, and hex editor.
- Configurable hotkeys, opacity, Windows startup, and tray controls.
- Portable single-file Windows application with no installer.
- No telemetry, CSP file modification, or physical cursor movement.
| Component | Support |
|---|---|
| Operating system | Windows 10 or Windows 11, x64 |
| Clip Studio Paint | Windows desktop application |
| Direct integration | CSP 4.0.10 x64 exact validated profile |
| Other CSP builds | Auto mode uses the Legacy CV fallback |
| Pen input | Mouse, Windows Ink, and Huion-oriented focus handling |
CSP's docked Window > Color Wheel palette should remain visible for color read-back and compatibility fallback.
| Mode | Behavior |
|---|---|
| Auto | Prefers the low-latency Direct backend when validated and falls back safely. Recommended. |
| Direct | Uses only the exact version-gated native backend and displays diagnostics. |
| Legacy CV | Detects and drives the docked CSP Color Wheel for broader compatibility. |
The application never patches or replaces Clip Studio Paint files. Unsupported Direct builds are rejected instead of being called.
| Hotkey | Action |
|---|---|
Ctrl+Alt+Shift+C |
Open or close the picker |
Ctrl+Alt+Shift+K |
Force Color Wheel re-detection |
Both hotkeys can be changed in Settings.
CSP Color Picker will be sold as a one-time Windows download. One purchase licenses one person to use it for personal and professional creative work, including paid artwork.
The software itself may not be shared, redistributed, resold, sublicensed, or repackaged. Team and commercial-distribution arrangements require separate written permission from Mortimoos.
After launch, use the bug report form for reproducible problems. Include your Windows version, CSP version, integration mode, backend diagnostic, and tablet model when relevant.
General development support is also available through Ko-fi.
CSP Color Picker is paid proprietary software. Copyright © 2026 Mortimoos. All rights reserved.
This is an unofficial independent project and is not affiliated with or endorsed by CELSYS, Inc. Clip Studio Paint is a trademark of its respective owner.