Every material does three things to the colours near it: it tints them, it takes light from them or returns it, and it competes with them. Knowing which it does most tells you what you can put beside it.
Lightness is measured from Colourwise’s reference values. These are reference points rather than claims about any product, since real materials vary widely. Warm or cool shows how the material tends to tint what surrounds it. Follow a name for its full page.
| Material | Lightness (dark to light) | Effect on nearby colour | Common failure |
|---|---|---|---|
| Marble | L* 91 | Cools, moderately | Reading the background as the colour and ignoring the veins, then wondering why a cool grey scheme fights the stone. |
| Glass | L* 91 | Cools, slightly | Forgetting the edge. Thick glass shelving has a distinctly green edge that shows against a pale wall. |
| Ceramic | L* 88 | Neutral | Matching paint to a glazed tile. The glaze's specular sheen makes the tile read lighter and cleaner than the same colour will in matte emulsion. |
| Light wood | L* 82 | Warms, strongly | Assuming all pale wood is equally neutral. Ash and birch differ enough from each other that they will not read as a matched set. |
| Chrome | L* 82 | Cools, moderately | Assuming it is invisible. Chrome next to a saturated colour becomes a small mirror of that colour. |
| Pine | L* 76 | Warms, strongly | Treating it as a neutral. Pine is not a neutral, and a scheme built as though it were will keep looking slightly orange for reasons the owner cannot place. |
| Stainless steel | L* 75 | Cools, slightly | Relying on it to add interest. It will not; it is a background material and behaves like one. |
| Stone | L* 71 | Neutral | Choosing against a single sample. The delivered stone will include tones the sample did not show. |
| Oak | L* 69 | Warms, strongly | Choosing a grey with a green undertone, which oak's yellow cast amplifies until the wall reads as sage nobody asked for. |
| Concrete | L* 68 | Cools, moderately | Building an all-cool scheme around it, which tips easily from restrained into cold — concrete usually needs one genuinely warm element to be habitable. |
| Brass | L* 64 | Warms, moderately | Mixing brass with chrome in the same sightline without a deliberate reason. The two read as an accident rather than as a mix. |
| Terracotta | L* 53 | Warms, strongly | Placing a cool pink or a mauve nearby. Both sit close enough in hue to argue with terracotta without being far enough away to read as deliberate contrast. |
| Brick | L* 45 | Warms, strongly | Attempting to harmonise. A colour close to brick but not identical to it reads as a failed match, which is why contrast usually works better than near-agreement. |
| Walnut | L* 30 | Warms, moderately | Pairing it only with pale colours, so the walnut reads as a dark hole rather than as one element of a distributed weight. |
| Dark wood | L* 25 | Warms, moderately | Under-lighting the space. Dark wood does not make a room feel cosy on its own; it makes it dim, and the difference is whether there is warm light to compensate. |
| Black metal | L* 19 | Neutral | Using too much of it in a low-light space, where the lines stop reading as graphic and start reading as gloom. |
For where a material’s colour comes from and how it ages, see the materials reference.