The look
Atmosphere first, furniture second
A den is defined by privacy, a snug by size, a lounge by function, a speakeasy by concealment. A fumoir is defined by atmosphere.

The three tests
- 1
Can you see the bulb?
If yes, it is not a fumoir. Light comes from below eye level, from a shade, or from a wall. Never from the middle of the ceiling.
- 2
Is anything shiny?
Finishes are matte, aged or worn. Unlacquered brass is permitted because it dulls. Chrome is not.
- 3
Would you talk quietly in it?
A fumoir absorbs sound. Heavy fabric, rug, upholstery. If the room echoes, it is a lounge.
Six colours
Nothing brighter than the amber, nothing colder than the ink. There is no true black and no true grey in a fumoir.
- Ink#14100EWalls, and the ground of everything.
- Smoke#241C18Secondary surfaces. Upholstery in shadow.
- Oxblood#6B2229Leather, one wall. Dried wine, not red.
- Amber#C98A3CThe lamp. Brass. The only light.
- Paper#EFE9DFLampshade, page, cuff. Never pure white.
- Ash#9C9086The colour things fade to.
Colour temperature
The single most decisive choice in the room. Above 3000K the aesthetic collapses no matter what furniture is in it.
- 1800K
- Candle. The ceiling of intimacy.
- 2200K
- The target. Warm filament, dimmed.
- 2700K
- Upper limit for a table lamp.
- 3000K
- Already too clinical.
- 4000K+
- Office. Do not.

Six materials
Four of these and a room reads as a fumoir regardless of the floor plan. All six and it stops needing an explanation.
01
Oxblood leather
Buttoned, aged, never new. One chair is enough; a whole suite is a hotel lobby.
02
Velvet
Curtains and upholstery in deep green, rust or ink. It absorbs sound, which matters more than the smoke story.
03
Dark wood
Walnut, mahogany, stained oak. Grain visible, finish matte.
04
Amber light
2200K to 2700K at seated height. One source beats three.
05
Brass
Unlacquered, so it dulls with handling. Lamp base, bar rail, tray edge.
06
Low seating
Chairs deep enough that standing up becomes an event.