Lighting designers are dimming things down — and clients are finally letting them

For years, the lighting brief for restaurants, hotels and even homes crept in one direction: brighter, cooler, more uniform. LEDs made lumens cheap, and cheap lumens got used. The correction now under way is being driven not by taste but by a growing body of research on circadian disruption.

Practices specialising in 'darkness design' report a shift in client language. Where briefs once specified lux levels, they now specify melatonin windows — evening scenes warm and dim enough not to suppress the hormone that governs sleep. Hospitality clients arrived first; residential developers are following.

The craft is harder than it sounds. Dim spaces read as gloomy unless contrast is composed deliberately: a candle-warm pool on a table, a grazed texture on a wall, and genuine shadow in between. 'Darkness isn't the absence of lighting design,' one Berlin practitioner told Monocle. 'It's the most expensive part of it.'

‘Darkness isn't the absence of lighting design. It's the most expensive part of it.’

Manufacturers are adapting, releasing fixtures that dim to 0.1 per cent without flicker and shift below 1800 kelvin — territory that was, until recently, the exclusive province of fire.

The deeper change is philosophical. Lighting design spent the electric century abolishing night. Its next chapter may be about rationing it back.