How Quiet Wall reads the colour of your wall, and when it gets it wrong

Every piece Quiet Wall makes starts with one thing. The colour of your wall.

Not a word like "sage" or "greige". A measured colour, like #747D6D, taken from the pixels in your photo. Almost everything else, the palette for the art, the frame, how much contrast the piece needs, is worked out from there.

I want to explain how that works, because "our AI reads your room" sounds like magic. And magic is usually where the problems hide.

Two jobs, two tools

There are two separate jobs, and I keep them apart on purpose.

The first job is understanding the room. An AI model (Claude, made by Anthropic) looks at your photo and tells us what a person would notice: what kind of room it is, where the furniture is, and which stretch of wall is clear and flat enough for a frame. It draws a box around that stretch of wall.

It is also told, in writing, not to guess colours. AI models are lovely at describing a wall as "warm off-white plaster". I don't trust them with the exact colour of it.

The second job is measuring, and that is plain code on our server. No AI involved. We take the pixels inside that box and convert them into a colour space built around how people see differences in colour (it's called Lab, if you like that sort of thing). Light falls across a wall unevenly, so the same paint shows up in shade and in light. We set aside anything that is clearly not wall colour, like a lamp or the edge of a frame, and read the wall by its lit side, which is how you judge a wall by eye.

We do the same for the whole photo to get the room's other main colours, and pick out one accent: the most colourful thing in the room that is clearly not the wall.

That's it. No guessing. If your wall is #896A52 in the photo, the art is made for #896A52.

Where it goes wrong

Here is the confession. The colour we measure is the colour in your photo. That is not always the colour on the paint tin.

Phones adjust colour for the light, and they don't always agree with your eyes. A white wall photographed at night under warm bulbs comes out closer to beige. We make art for the wall we can see. If the photo is orange, we will make lovely art for an orange room.

It has made other mistakes too.

Until October it read the wall from its biggest patch of similar pixels. With light raking across a wall, that patch was often the shadow, so a pale limewash wall came out as "dark taupe" and got art meant for a dark room. It now reads the lit side.

An early version also took a dark wall as a sign of a dim room, and darkened the preview of the art to match. Dark paint is not dim light. I've toned that down.

And once it hung a print on a pillow. A bed photographed from the side looked about two metres wide, which confused it about where the clear wall was. Now you see where we plan to hang the piece before anything is made, and you can drag the frame somewhere better.

How to take a photo it can read

Use daylight if you can. Warm bulbs mixed with daylight is the hardest light there is for colour.

Stand back far enough to get the furniture in. The sofa or the bed is how we work out scale.

Face the wall, rather than shooting it from a corner.

That's all. You don't need a good camera. You need the wall to look in the photo the way it looks to you.

Why bother

Because the alternative is guessing, and the whole point of Quiet Wall was to stop guessing.

Your wall already has a colour. I would rather measure it than make one up.

If you want to see what yours measures, it's free and takes about two minutes.