TheTruthaboutWhiteSofas.

What matters is not the mark but what you can do about it, and on most of ours the answer is a simple one: the cover comes off and goes in the wash. Snow Drop, Cool Coconut and our other natural plains wash at thirty degrees and come back white, the way a good white shirt does, which turns white from something you guard against into something you simply launder. A fixed cover, or a fabric that can only be dry-cleaned, is a different thing, and we will tell you so before you order, because we would always rather you knew.

The day the room turned white

One morning we took everything out of Sophie's sitting room, and then we put white back in. A woven wool rug, a soft pebble white, went down over the raw, unpolished boards. The white furniture was carried into place. The woodwork and the lovely panelled shutters were already their own quiet white. And the room changed completely. It was not one white but many: the sofas wore one white, the rug another, the woodwork a third, the floor no white at all, and somehow nothing matched while everything agreed. The greens through the windows looked greener and the flowers brighter, and the light moved through the room all day, yellow in the morning and pink by evening. Someone walked in, stopped, and said it felt like heaven.

Why white quietens a room

A room full of competing colours keeps the eye busy, always adjusting, never quite settling. Take the colour away and there is less for the eye to do, and what you feel instead is calm. White also lets the real things in a room come forward: the grain of a wood floor, the weave of wool and linen, the garden through the glass, the way the light changes through the day. It does not compete with any of it. We see this every time we dress a room in the showroom, and it is the first thing visitors say when they walk in, how calm it feels. That is what white gives you that no costly material can promise on its own: the sense that nothing in the room is asking anything of you.

The blank canvas

What we did not expect was how freeing the white room would feel. Because nothing in it is competing for attention, anything you add speaks clearly, and the whole mood can be changed with very little. A pair of patterned cushions, and the room turns. A different cover on the coffee table, a stripe, a floral, a touch of yellow, and there is a new season in the room without a single piece of furniture moving. It happens with what you wear, too; we have watched a floral dress change a whole room the moment someone sits down. The calm underneath stays where it is, while everything on top of it can change with the season, the occasion, or simply your mood, one washable layer at a time. Our most loved white is Snow Drop, with the soft off-white Cool Coconut beside it, and there are whites in every range, each with its own quiet character.

Why the washing machine changes everything

Think of the other white things you live with quite happily: shirts, bed linen, tablecloths. Nobody warns you off white sheets, because sheets wash, and a white loose cover in a washable cotton or linen is simply more of the same. A mark that would be a lasting worry on fixed upholstery is, on a loose cover, just something for the next wash: thirty degrees, a natural detergent, and it comes back to itself, softening a little more each time, as good cotton and linen do. Order a second cover and it is easier still, one on the sofa while the other is in the wash, so even a muddy week is no trouble. And white has a way of getting on with everything: it never clashes, it flatters the fabrics around it, and it makes a room feel larger and calmer, which is a good part of why people keep coming back to it.