Complementary colors and color planning

Complementary colors as a designer's tool 

Choose shades like a professional. Interested in color design? Read this article for helpful tips on using complementary colors and how light affects colors. Yes, we all see colors differently.

Color is not decoration – it is structure

In interior design, colors are not just a surface treatment, but a built-in part of architecture and the experience of a space.

Complementary colors, those located on opposite sides of the color wheel, are a particularly effective tool – they bring rhythm, energy, and optical depth to a space, just like a structural tension member in a bridge. The color wheel makes it easy to identify complementary colors.

With Frenchic paints, complementary colors don't clash – they converse. Sometimes introducing a new color to a space makes the other colors come alive. Complementary colors stand out and always evoke emotions. 

The softly velvety matte finish diffuses light and allows contrast to come alive naturally as part of the interior. The result is a harmonious space with both technical and emotional balance.

Engineering facts about color and color vision – the physics of contrast

The effectiveness of complementary colors is based on the physiology of the eye and the wavelengths of light.
When two widely separated wavelengths (e.g., blue ~470 nm and orange ~600 nm) are placed next to each other, they create maximum spectral contrast – this makes the brain perceive the space as brighter or deeper.

Yes, everyone sees colors differently because color vision is influenced by personal factors such as genetic differences, sex, and color blindness. Although the basic mechanism is the same, the way the brain interprets signals sent by the eyes' cone cells varies from person to person. 

In interior design, this is technically reflected in the following metrics:

• LRV (Light Reflectance Value): indicates how much light is reflected by a surface.

• A light shade, such as Stone Rosie (LRV ~58), reflects more light and makes the space feel larger.

• A dark shade, such as Smudge (LRV ~8), absorbs light and creates an intimate atmosphere.
  When these are combined, they create an optical illusion of depth – the space gains rhythm and contrast that work in all lighting conditions.

• Contrast ratio: a good indoor contrast ratio is typically 5:1 – 8:1, so shades stand out without being distracting. So be bold and choose that shade, because all shades look lighter on large surfaces. 

• Color temperature and spectral shift: the difference between daylight (5500 K) and warm artificial light (2700–4000 K) directly affects how complementary colors appear. That’s why it’s worth testing shades at different times of day. Peel & Stick color sheets with an adhesive backing make choosing easier, as they can easily be moved from room to room at different times of day. 

Color architecture – the interplay of light and surface

In architectural design, color is part of the building’s material palette, not just a decoration added on top. Color determines how light behaves in a space: whether it is absorbed, reflected, or blends with other shades. 

For example, a room painted in a delicate light pink wall paint seems to bask in the morning sun all year round. Explore pastel shades such as Pinky and Sweetcheeks. 

Frenchic paints work exceptionally well in this context – their finish is matte, so light does not bounce back as a shiny reflection, but spreads softly. This makes complementary color contrasts natural and long-lasting in every season. Our ultra-matte wall paint is especially beautiful.

Historical examples of masters of color structure

 Le Corbusier’s color philosophy

Swiss architect Le Corbusier created the Architectural Polychromy system as early as the 1930s, in which colors were categorized according to their spatial effect: deepening, lightening, harmonizing, and accentuating.
He used complementary color pairs – such as warm oranges against cool blue – in a controlled way as a structural element, not as decoration. 

Alvar Aalto and colors in Finnish light

At the Paimio Sanatorium (1933), Aalto used the principle of complementary colors functionally: blue and greenish tones had a calming effect, while warm yellows, greens, and terracottas enlivened communal spaces.
Finnish light is cool and diffused, so Aalto’s colors weren’t pure; they were complementary colors softened to suit natural light – an excellent lesson for today’s painting projects. Interestingly, the color of interior ceilings was also important. 

Using complementary colors in interior design – create a technically sophisticated yet emotive space

A complementary color pair works best when contrast is balanced through materials and textures.
Try these Frenchic combinations:

Pro tip: Use one bold complementary color as an “accent” (e.g., on a door, a piece of furniture, or the ceiling) and keep the other surfaces more neutral. This keeps the space visually calm yet impactful. 

Color psychology and user experience

Studies show that color contrasts can affect the comfort and energy consumption of a space.

Complementary colors can be used to:

• add a sense of depth without structural changes

• optimize light reflectance (reducing the need for artificial lighting)

• improve wayfinding – for example, in hospitals and schools, complementary colors help people move around and distinguish different activity areas

Contrast created with Frenchic paints is a sensible and aesthetic choice – less need for touch-ups, more control over light. You can use color to highlight or conceal, and make a space feel longer or wider. Color alone can create the mood of a space!

In conclusion – color is both engineering and emotion

Using complementary colors brings together precision and emotion.
When the contrast and reflectance of the shades are calculated correctly, a space becomes an experience:
light moves, surfaces breathe, and architecture begins to sing.

Frenchic offers shades where architectural color intelligence meets the warmth of home – for professionals and adventurous home painters alike. So bring emotion into your design! 

Complementary colors – the art of contrast and the rhythm of the home

When color becomes an experience

Complementary colors are a fundamental element of interior design, allowing you to control the rhythm, energy, and flow of the eye through a space. They’re like the harmony of two different notes – tension and balance in the same space. Using complementary colors is an easy way to make a space interesting and inviting. 

With Frenchic paints, complementary colors don't shout, but breathe with sophistication. The matte, velvety surface absorbs and diffuses light so that the contrasts blend naturally into the space – just like an architectural play of shadows. The velvety smooth finish is both timeless and luxurious, and creates a sense of calm.

Opposite magnets on the color wheel

Complementary colors are shades located opposite each other on the color wheel, which neutralize and enhance each other.
When these colors meet, they create contrast dynamics, bringing depth and rhythm to a space.

Classic complementary color pairs in interior design are:

• Blue and orange – the perfect balance of cool and warm.

• Red and green – a natural contrast also found in the plant kingdom.

• Yellow and purple – a bold, creative, and energizing combination.

With muted shades, such as Frenchic paint shades you can control contrast without excessive visual noise – an important skill, especially in small spaces and areas with limited natural light. Remember, you can also use light pastels as complementary colors - interior colors don't always have to be bold. 

A professional perspective: optical balance 

In interior design, choosing complementary colors is not just about pleasing aesthetics – it is a dialogue between light and surface.
Professionals often talk about the LRV (Light Reflectance Value), which indicates how much light a color reflects or absorbs.

Info:  LRV (Light Reflectance Value) is a surface's ability to reflect light, measured as a percentage: 0% is completely black and 100% completely white. A high LRV means that the surface reflects more light and appears lighter, while a low LRV means that the surface absorbs more light and appears darker. LRV is often measured with a spectrophotometer, and its value depends not only on the surface's color, but also on its texture and gloss level. 

The strength of contrast also depends on the direction of the light and its color temperature (Kelvin): cool northern light emphasizes blue shades, while spaces facing south are warmed by orange and reddish hues. Naturally, we have different shades of natural light available at different times of year. This is both a challenge and a wonderful opportunity! You have to experience that 'blue moment' in the middle of winter!

Materials, light, and color combinations - color is light

A method favored by professionals for working with complementary colors is through a material palette: colors are not just surfaces, but also texture, sheen, and light reflection.
For example, Frenchic's ultra-matte wall paint absorbs light and gives contrasts a natural depth - while still providing a durable, fully washable surface for everyday use. Frenchic's matte, breathable wall paints are a perfect choice for traditional buildings, for example, when used with lining paper or wallpaper, thanks to their technical properties as well as their range of traditional powdery, muted shades. 

A color's value is its degree of lightness or darkness

It describes how dark or light a hue is and is one of the three basic properties of color, alongside hue and saturation.  Good use of value is important in art and interior design, as it creates a foundation and structure for a space (or a work of art), after which colors can enhance the expression.

• hue: position of the color on the spectrum
• saturation: color intensity
• value: degree of lightness or darkness

Uses and meanings

• Mood and atmosphere:
• LRV can affect the mood of a space; for example, higher values create a more open and brighter impression. 
  Measuring the LRV value. 

  
  

  
  

  Contrast and accessibility:

  The difference in a color's LRV value is critical for perceiving visual differences between, for example, doors, floors, and walls. A difference of at least 30 points is recommended to make a space easier to navigate, which is especially important for people with low vision.

  
  

  
  

  In design and architecture:

  Professionals use LRV values to predict how light or dark a surface will look and how it will affect the overall appearance of a space.

  
  

  
  

  Bold, but controlled

  Using complementary colors takes understanding, but it always pays off. A good designer balances saturation, light, and surface texture so the result feels authentic and considered.

  “Complementary colors don’t compete. They complement each other - like light and shadow in architecture.”

  Choose Frenchic - colors that stand the test of time

  The Frenchic paint range offers professional-grade pigments and an eco-friendly formula that perfectly reproduce the harmony of complementary colors.
  Whether you’re creating color contrast in a modern loft or a traditional wooden house, Frenchic shades offer depth, texture, and emotion - exactly what designers and interior decorators appreciate. 

  Color psychology in tension - when a space comes alive

  From the perspective of color psychology, complementary colors activate different hemispheres of the brain and bring emotional energy to a space.

  Blue–orange brings energy and creative focus to workspaces.

  Red–green balances stimulation and calm in a dining area.

  Yellow–violet fosters a sense of community and inspiration - perfect for a living room or creative studio.

  The natural pigment base of Frenchic shades makes their psychological effect softer and longer-lasting - they don’t tire or irritate, but blend into the rhythm of everyday life. The velvety finish of the beautifully leveling wall paints is understated and stylish.

  If you’re planning a color scheme for a space, use the color wheel to check complementary colors and how well shades work together. The easy-to-use color wheel is double-sided. 

  Click here to read the instructions for using the color wheel. 

  Whether you choose your colors by feel or science, the most important thing is that you choose the color. With Frenchic, you’ll learn to be bold with color!