RGBWW commonly describes a colour engine combining red, green and blue emitters with separate warm-white and cool-white emitters. These components let the fixture generate coloured light and adjustable white light.
Emitters and colour modes
The emitter arrangement and the user controls are different things. A fixture may offer CCT, HSI, xy or gel modes while its internal colour engine calculates the emitter mix. An RGB control mode does not necessarily reveal every physical emitter channel.
Practical example
Use CCT mode for a neutral key and HSI or xy for a coloured background on a compatible panel. Check the measured output in each mode. A fixture’s white-light wattage or lux specification cannot be applied unchanged to every saturated colour.
Reading the specification
RGBWW is a useful description, not a complete quality assessment. Check how the manufacturer defines the letters, the CCT range, tint adjustment, colour-rendering data and behaviour at low dimming levels. Two RGBWW fixtures can have different spectra and produce different results on fabrics or skin even when their displayed colour settings agree.
Equipment examples
The Aputure Nova P600c uses an RGBWW engine and provides several calibrated colour-control modes.
Related terms
Colour Mixing · Bi-Colour · RGBACL · SSI (Spectral Similarity Index)