# nGeneColorCube — 3D RGB Color Exploration

> 3D RGB Color Exploration (iPhone/iPad app by Hyunsuk Roh.)

- Source: https://appshunter.io/ios/app/ngenecolorcube/id6766004484 (this page in markdown: same URL + `.md`)
- Developer: [Hyunsuk Roh](https://appshunter.io/developer/1723711954)
- Category: Utilities
- Price: Free
- Age rating: 12+
- Requires: iOS 26.0 · 26 MB
- Languages: American English
- Released: 2026-05-04
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/ngenecolorcube/id6766004484/reviews.md

## What is nGeneColorCube?

nGeneColorCube is an interactive visual workspace for exploring color relationships in three-dimensional RGB space, inspecting real-world colors, and studying approximate oil-paint mixtures.

Five connected workspaces are included:

• Color Cube
View colors as points inside a rotatable and zoomable 3D RGB cube. Use R, G, and B axis labels and plane-distance guides to understand each channel geometrically. Tap a built-in color point to inspect it, and triple-tap to restore the original cube view.

• Color Inspector
Sample a real-world color under the camera’s center marker. Select a single point or an averaged sampling area, then review RGB, CMYK, HEX, hue, HSV, HSL, CIE Lab, relative luminance, contrast ratios, color harmonies, cube coordinates, and the nearest built-in palette point.

• Oil Mix
Choose two oil-paint colors and adjust their proportions. Compare the estimated mixture with nearby palette colors, inspect the relationship in a rotatable Mini 3D RGB cube, and send the selected mixture to the main Color Cube.

• Oil Decompose
Start from a selected target color and search for approximate paint formulas using two colored paints, three colored paints, or both. Titanium White and Ivory Black can be enabled as optional modifiers without counting toward the colored-paint total. Adjust the allowed ΔRGB error, review mixing ratios, and inspect selected two-paint formulas in a rotatable Mini 3D RGB cube.

• Masterpieces
Browse bundled artwork references, zoom into an image, and select an exact source pixel. The sampled color can be analyzed, displayed in the Color Cube, and compared with recommended two-paint formulas.

A shared selection system keeps the last explicitly selected color from Color Cube, Color Inspector, Oil Mix, or Masterpieces available as the Oil Decompose target, even after the app is relaunched.

Oil Mix and Oil Decompose use an RGB-based, channel-wise K/S-style approximation. Results are intended for visual study and formulation starting points, not exact spectral predictions or manufacturer-specific paint recipes.

All color analysis and mixing calculations are performed on device. Camera frames, photographs, and videos are not saved or uploaded. Only the last explicitly selected color is stored locally to restore workflow continuity. No account, advertising, analytics, subscription, or server-side color processing is used.


## Version history (last 5 releases)

### 1.4 — 2026-07-31

Version 1.4 adds major new color and oil-paint workflows.

• Added Oil Mix for estimating two-paint mixtures with adjustable proportions, nearest palette matches, and a rotatable Mini 3D RGB cube.
• Added Oil Decompose for finding approximate two-paint and three-paint formulas from a target color.
• Added optional Titanium White and Ivory Black modifiers, plus an adjustable ΔRGB error limit.
• Added selectable Mini 3D RGB cube previews for recommended two-paint formulas.
• Added colored cube edges, free rotation, triple-tap reset, and stable sizing to the Mini 3D RGB cubes.
• Added the Masterpieces workspace for browsing bundled artwork references and selecting exact source pixels.
• Added oil-paint formula suggestions below selected colors in Color Inspector and Masterpieces.
• Added persistent shared color selection across Color Cube, Color Inspector, Oil Mix, and Masterpieces.
• Improved the main Color Cube with visible R, G, and B labels and triple-tap reset.
• Refined nearest-palette labeling and excluded the two source paints from Oil Mix recommendations.
• Improved selection behavior so merely browsing another workspace no longer replaces the last explicitly selected color.
• Updated local privacy behavior: camera imagery remains unsaved, while only the last explicitly selected color is stored on device for continuity.

### 1.3 — 2026-07-24

Version 1.3 streamlines the app around Color Cube and Color Inspector.

• The Masterpieces tab is no longer shown in the public version.
• Existing 3D color exploration, camera sampling, and detailed color analysis remain unchanged.

### 1.2 — 2026-07-19

Version 1.2 refreshes the bundled Masterpieces collection, now featuring 12 artworks from 7 artists for pixel-level color exploration.

### 1.1 — 2026-07-01

Version 1.1 adds a broader color exploration workflow:

• Added three main tabs: Color Cube, Inspector, and Masterpieces
• Added camera-based Color Inspector for sampling real-world colors
• Added detailed color analysis including HSV, HSL, CIE Lab, luminance, contrast, and harmony suggestions
• Added Masterpieces tab for browsing bundled public-domain or license-cleared artwork images
• Added zoomable artwork inspection with exact single-pixel sampling
• Added direct mapping from camera and artwork samples back into the 3D RGB color cube
• Improved color selection flow and cube position analysis
• Preserved fully on-device processing with no data collection

### 1.0 — 2026-05-05

No release notes.

## More apps by Hyunsuk Roh

- [nGeneEngine](https://appshunter.io/ios/app/ngeneengine/id6762329008)
- [nGeneTime](https://appshunter.io/ios/app/ngenetime/id6763404984)
- [nGeneCryptoKeys](https://appshunter.io/ios/app/ngenecryptokeys/id6763692938)
- [Project_nGene.org](https://appshunter.io/ios/app/project-ngeneorg/id6765968294)
- [nGeneSubwayWatch](https://appshunter.io/ios/app/ngenesubwaywatch/id6766683139)

All apps by Hyunsuk Roh: https://appshunter.io/developer/1723711954

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*