# Colour and materiality: and the surfaces that carry it > Colour theory, an interactive wheel, palettes for real rooms, and how texture changes a colour. Source: https://guide.rayon.design/knowledge/foundations/colour-and-materiality · Foundations · Updated 2026-10-19 © 2026 Rayon. Quote short excerpts with a link to the source page. Full terms: https://guide.rayon.design/about ## Introduction In a room, colour never arrives alone. It comes on a surface (plaster, linen, oak, stone) under a [light](https://guide.rayon.design/knowledge/foundations/light) that changes all day. Learn how colours relate on the wheel, how to set their proportions and how texture changes what a colour does, and a palette holds together from the paint chip to the finished room. ## Three dimensions of colour Hue, value, saturation. Every colour can be described by three properties. [Hue](https://guide.rayon.design/lexicon/hue) is its family on the wheel. [Value](https://guide.rayon.design/lexicon/value) is how light or dark it is. [Saturation](https://guide.rayon.design/lexicon/saturation) is how intense or greyed it is. In rooms, value does most of the work: a scheme with good value [contrast](https://guide.rayon.design/lexicon/contrast) reads well even in black and white. ## The colour wheel Pick a colour, then a harmony. Painters and designers use a red–yellow–blue wheel; screens mix red–green–blue. In interiors the wheel is a tool for relationships, not for choosing pure hues: find the harmony here, then knock every colour back with grey or white before it goes on a wall. Opposites on the wheel. The strongest contrast: use one as the field and the other as a small accent.Neighbours on the wheel. Calm and cohesive; vary value so it does not go flat.A colour and the two either side of its complement. Contrast with less tension than a straight opposite.Three colours evenly spaced. Lively: let one dominate and mute the other two.Two complementary pairs. Rich but hard to balance; keep one pair as quiet undertones. Click any segment. The wheel turns on its own until you do. ## Basic concepts The vocabulary of the wheel. ### Primary, secondary, tertiary Primaries can’t be mixed from others. Two primaries make a secondary; a primary and its neighbouring secondary make a tertiary. ### Complementary [Opposites](https://guide.rayon.design/lexicon/complementary-colours) on the wheel. Side by side they intensify each other; mixed, they neutralise into a grey. That is how a too-pink beige is calmed with a touch of green. ### Analogous [Neighbours](https://guide.rayon.design/lexicon/analogous-colours) on the wheel. They share a hue, so they always sit together; the risk is monotony, not clash. ### Warm and cool Warm colours advance and feel close; cool colours recede and feel airy. A north-facing room reads cooler, so warm its neutrals. ### Tint, tone, shade Add white, grey or black. Almost every colour used in a home is a tone: a hue softened with grey. ### Neutrals have undertones No grey is truly neutral. Read the [undertone](https://guide.rayon.design/lexicon/undertone) against white paper, and keep one undertone family per room. ## Finding your palette Choose one, or make your own. Colour sets the mood of a room before anything else, and it is hard to undo: walls, floors and fabrics are chosen once and lived with for years. A palette that holds together lets every choice support the others; one that does not makes even good pieces look wrong. Start here from a palette built to work in a room, or from a colour you already love. Edit any colour to build a palette around it, drag colours into order, add one between two others or take one out, then copy the codes to take to paint charts and samples. ## Colour systems How colours are named and matched. To specify a colour so it can be reproduced, designers give it a code from a system. Reference systems (Munsell, NCS) map all of colour space. Libraries (Pantone, RAL) are numbered sets for products and coatings. Paint brands sell their own named ranges; matching one brand’s colour in another’s paint is only ever approximate. ### Munsell Describes any colour by three numbers: hue, value (0 black to 10 white) and chroma (intensity). A notation like **5YR 6/8** reads as hue 5YR, value 6, chroma 8. It is the model behind most colour science and soil, skin and stone charts. [Official site](https://munsell.com/) ### NCS The Natural Colour System, Scandinavia’s standard and common in European architecture. **S 2050-Y50R** means 20% blackness, 50% chromaticness, hue halfway between yellow and red. It describes colour the way we see it, not how it is mixed. [Official site](https://ncscolour.com/) ### Pantone A numbered library of standard colours used across fashion, product and interiors. Textile and home codes end in TCX or TPG. Use it to brief a fabric or product colour to a supplier; it is not a paint range. [Official site](https://www.pantone.com/) ### RAL The German standard for coatings, powder coat and industrial finishes. RAL Classic codes like **RAL 9010** or **RAL 7016** are how window frames, radiators, metalwork and kitchens are specified. [Official site](https://www.ral-farben.de/en/) ## Material The second colour. Texture is how a surface feels to the hand and how it handles light. Rooms that feel finished contrast texture more than colour: rough against smooth, matt against [sheen](https://guide.rayon.design/lexicon/sheen), soft against hard. Texture also shifts colour: piles and loops throw tiny shadows and read darker and warmer, gloss reflects its surroundings and reads lighter and cooler. Pair at least three textures in any room. ## Tiling textures Any material, laid in a pattern. A floor or wall finish is a material and a way of laying it. Pick one of the materials above and a pattern, then set the grain’s scale, the tile size and the joints. The result is one square metre that repeats without a seam, ready to download and apply in a model or a render. ## Questions What people ask most about colour. ### What colours go with green? Green pairs naturally with the colours found next to it outdoors: warm whites, sand, terracotta, wood tones and soft pinks. Sage and olive greens suit cream, ochre and brass; deep greens suit navy, burgundy and gold. Keep one green dominant and repeat it, rather than mixing many. ### What colours go with brown? Brown works with creams and warm whites for a calm room, with blues (from sky to navy) for contrast, and with green, rust and mustard for warmth. Treat brown as a neutral: let wood and leather carry it, and add one stronger colour as an accent. ### What colours go with grey? First read its undertone. Warm greys suit cream, blush, ochre and wood; cool greys suit white, navy, black and blue-green. Grey also takes strong accents well, such as mustard, emerald or deep red, used in small amounts. ### What colours go with navy blue? Navy acts like a softer black. Pair it with warm white and natural wood for calm, with brass and camel for warmth, or with coral, rust or mustard for contrast. In small rooms, use it on one wall or on the joinery rather than everywhere. ### What colours go with beige? Beige suits other warm neutrals (cream, taupe, stone) layered in different textures, plus wood and black for definition. For colour, add sage, terracotta, dusty blue or olive. Avoid pairing it with cool, bright whites, which make it look dull. ### How do I choose a paint colour? Start from what stays in the room, such as the floor, the sofa or a rug, and choose a colour that works with it. Paint large samples, at least A3, on two walls and look at them in the morning, at noon and under lamps at night. Light changes colour more than anything else, so the same paint can look very different in a north-facing and a south-facing room. ### What is a colour scheme? A colour scheme is the planned set of colours a room uses and how much of each it shows. Common schemes are monochromatic (one hue in several values), analogous (neighbours on the colour wheel) and complementary (opposites). The 60-30-10 rule, about 60 percent dominant, 30 percent secondary and 10 percent accent, keeps any scheme balanced. ### What is an undertone in paint? An undertone is the subtle colour beneath a paint's main colour: a white may lean yellow, pink, blue or green. It shows most when you place samples side by side or against pure white paper. Matching undertones between walls, floor and furniture is what makes colours feel related. ### How do I find my colour palette for a home? Collect images of rooms you like and note which colours appear again and again, then check the colours you already own in clothes, art and objects. Build a palette of one dominant neutral, one or two secondary colours and one accent, and test them together on large samples in the actual room. ### What colours go with purple? Pale purples such as lilac suit soft greys, creams and sage green. Deep purples such as aubergine suit gold, mustard, olive and warm wood. Because purple is strong, use it in fabrics, art or one painted surface, and balance it with plenty of neutral.