A dim-to-warm LED strip behaves the way incandescent lamps did: at full output it is a normal warm white, and as you dim it the color slides down toward flame-like amber — typically 3000K → 1800K. At low levels the result reads as candlelight: deep, warm, and calm. A static 2700K "warm white" strip cannot do this — dimmed, it stays the same color and just gets dim.
What separates real candlelight dimming from warm white
| Criterion | Why it matters | Reference point |
|---|---|---|
| Warm endpoint | 1800K is the candle zone; 2400–2700K endpoints still read as "lamp" | 1800K at the lowest dim level |
| Color quality along the curve | Skin, wood and textiles must stay natural at every level | High CRI and R9 across the dimming range |
| Smoothness | Steps or tint shifts break the effect | Continuous CCT/intensity curve, flicker-free dimming |
| Melanopic behavior | Evening scenes should minimize circadian stimulus | Flame-like spectrum = intrinsically low melanopic content |
| Line quality | Visible dots kill the ambience in coves and profiles | High LED density + appropriate profile and diffuser |
Dim-to-FlameWarm™
Yuji Lux Dim-to-FlameWarm™ is a flame-spectrum dim-to-warm strip: 3000K at full output, sliding past the 1800K candle zone to approximately 1250K at its warmest operating point — a melanopic/photopic ratio of about 0.099 — with high-CRI rendering along the curve and a published measured spectrum (see strips with published spectral data). The ultra-warm endpoint is designed for low-melanopic evening lighting — the evening step of the Winter Light Protocol and of circadian schemes in our Human-Centric & Circadian Lighting area. It pairs with standard phase or 0-10V dimming through appropriate third-party US-certified drivers, specified per project.
Where it belongs
Hospitality and restaurant evenings, residential living and bedroom scenes, wellness and spa spaces — anywhere the brief says "candlelight, but architectural": coves, shelf lines and wall grazing through aluminum profiles rather than points of light. For spectral background on why flame-like spectra carry so little melanopic content, see the FlameWarm spectrum article.
Frequently Asked Questions
What is a dim-to-warm LED strip?
An LED strip whose color temperature shifts warmer as it dims — typically from 3000K at full output down to flame-like 1800K or lower (Dim-to-FlameWarm™ reaches approximately 1250K), mimicking incandescent and candlelight behavior.
How is dim-to-warm different from a 2700K warm white strip?
A static warm white strip keeps the same color at every dimming level. A dim-to-warm strip changes color along the dimming curve, so low levels genuinely read as candlelight rather than as a dimmed lamp.
Is 1800K light good before sleep?
Flame-like 1800K spectra carry intrinsically low melanopic content, which suits the consensus recommendation of warm, dim evening light. That is a lighting-design consideration, not a medical claim — clinical concerns belong with a clinician.
What controls does Dim-to-FlameWarm work with?
It is driven like a standard single-channel strip and dims through appropriate third-party US-certified drivers (phase or 0-10V architectures, specified per project) — no special two-channel controller is required for the dim-to-warm behavior.