What Is RGBLAC LED? Six-Channel Color Architecture Explained
RGBLAC is a six-channel LED color architecture that extends the classic RGBW palette with Lime, Amber and Cyan channels. Instead of three or four dies producing approximate color, RGBLAC gives lighting designers six independently controlled color coordinates — enough to shape the spectrum itself, not just the perceived color.
The Six Channels
| Channel | Peak region | Role in the system |
|---|---|---|
| Red | ~620–640nm | Saturated reds, warm energy, skin-tone depth |
| Green | ~520–540nm | Gamut anchor, luminous efficiency |
| Blue | ~450–470nm | Cool anchor, saturated blues, white conversion |
| Lime | ~500–580nm broad | Fills the green-yellow gap, boosts CRI and gamut volume |
| Amber | ~580–600nm | Tungsten emulation, candlelight, golden-hour warmth |
| Cyan | ~470–500nm | Saturated cyans, gamut expansion toward blue-green |
Why Six Channels Beat Four
With four channels (RGBW), most of the color space is reachable, but only along limited mixing paths — and white points are tied to the white die's fixed spectrum. Adding three more channels changes the game:
- Metamerism control: many channel combinations produce the same measured chromaticity but different spectra. Spectral rendering of skin, fabric and foliage can be tuned, not just the CIE point.
- Higher gamut volume: Lime and Cyan push the reachable gamut into regions RGBW physically cannot cover.
- Better camera behavior: camera sensors have their own spectral sensitivity curves; a fuller, smoother spectrum minimizes the metameric failures that make RGBW lights render “off” on camera.
Where RGBLAC Matters Most
Film and cinema lighting
Matching tungsten, HMI and daylight sources — and mixing them in one frame — requires spectrum-level control. RGBLAC engines emulate reference illuminants with far lower error than RGBW.
Broadcast and virtual production
LED volumes and studio walls punish spectral gaps: colored garments and skin tones shift on camera. Six-channel output keeps on-camera color stable across the mixing range.
Stage and live events
Deep saturated cyans and ambers — the two regions RGBW struggles with most — are native colors in RGBLAC.
RGBLAC at TYANSHINE
TyanShine's RGBLAC technology implements the six-channel architecture in COB LED module form, with measured spectral data published in the RGBLAC whitepaper — covering spectral power distributions, gamut measurements and color-mixing performance.
Related guides: RGB vs RGBW vs RGBLAC, RGBLAC vs RGBW for Film Lighting.