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How to combine colors in decoration? 9 ideas and inspirations!

Discover tips for combining primary, secondary, and tertiary colors to create harmonious and modern projects in decoration.

By CASACOR Publisher

Submitted at Apr 2, 2025, 12:00 PM

08 min de leitura
Projects Home of Samba, by Marcelo Salum at CASACOR São Paulo 2023.

Projects Home of Samba, by Marcelo Salum at CASACOR São Paulo 2023. (MCA Estudio)

Combining colors in decoration is often a challenge for those seeking harmony and style. The right color palette choice transforms the projects and reflects personality, but the difficulty in gathering information on how to unite primary, secondary and tertiary colors is still an obstacle for many. By understanding their functions and effects, it is possible to create colorful, cozy, and attractive spaces that communicate well with each other. Combining colors in decoration is one of the most important steps to creating a harmonious and aesthetically pleasing environment. The choice of colors can directly influence the atmosphere of a space, from making a project cozier and more inviting to creating a more vibrant and energetic atmosphere. Here are some essential tips for combining colors in decoration effectively:

What are primary, secondary, and tertiary colors?


Primary colors are those that cannot be obtained by mixing other colors: red, blue, and yellow are the main characters here. When mixed, they generate the so-called secondary colors. For example, blue and yellow result in green; red and blue form purple; and red with yellow gives rise to orange. The tertiary colors are born from the joining of a primary color with an adjacent secondary one, producing shades like blue-green and red-orange. This classification reveals an almost infinite range of possibilities that bring life and movement to decorative spaces.

How to combine colors in indoor projects


Apply the 60-30-10 Rule

One of the most widely used formulas for balancing colors in decoration is the 60-30-10 rule. This technique suggests that:

  • 60% of the decoration should be composed of the main color (generally the most neutral or soft, like shades of beige, gray, or white);

  • 30% should be the secondary color, which creates contrast and complements the main color (stronger or more vibrant shades can be used);

  • 10% should be the accent color, which is used in details, such as cushions, vases, frames, or small furniture pieces (typically a bolder and more striking color).

This division creates a balanced and harmonious visual, where no color excessively overshadows the others.

Choose a complementary color palette

Complementary colors are located opposite each other on the color wheel and create a strong contrast with each other. Combining complementary colors can result in vibrant and energetic decoration. Examples of complementary combinations include:

  • Blue and orange

  • Green and red

  • Yellow and purple

However, it is important to use these colors sparingly, as they can be quite intense. In decoration, you can choose one of these colors as the dominant tone and use the other as an accent.

Opt for analogous combinations

Analogous combinations are made between colors that are next to each other on the color wheel. These combinations are softer and provide a calm and cohesive visual effect. For example:

  • Blue, blue-green, and green

  • Red, orange, and yellow

  • Purple, lilac, and pink

Analogous colors create a sense of fluidity and harmony, making them ideal for spaces like living rooms, bedrooms, and relaxation areas.

Use neutral colors as a base

Neutral colors (such as white, gray, beige, black, and wood tones) are highly versatile and can be easily combined with other more vibrant or daring colors. They help to balance the use of stronger colors and provide a calm and sophisticated backdrop.

Invest in monochromatic tones

The use of different shades of the same color creates an elegant and modern decor. The monochromatic technique is a great option for those who want a more sober and sophisticated space.

This can be done by using different variations of a shade of blue, green, pink, or any other color of your preference. The key here is to vary in the intensities and saturation of the chosen color, creating depth and visual interest.

Create contrasts with warm and cool colors

Combining warm colors (like reds, oranges, and yellows) with cool colors (like blues, greens, and purples) can generate interesting contrasts. Warm colors are associated with energy and warmth, while cool colors convey serenity and tranquility. When used together, they can create a balanced and dynamic environment. For example, you might use a warm orange sofa with cushions or walls in shades of blue or green to create an interesting and balanced contrast.

Add patterns and textures

Adding patterns and textures to colors also helps to create harmony in decoration. You can use cushions, curtains, rugs, or wallpaper that feature geometric, floral, or striped patterns in complementary or analogous colors to create depth and dynamism.

Textures, like wood, glass, and metals, can complement the color palette, adding a tactile dimension to the project.

Beware of excessive use of vibrant colors

Vibrant colors, like intense red or bright yellow, can be very impactful. Using them in excess can make the project visually tiring. When incorporating strong colors, the ideal is to use them in small doses, such as in accessories (cushions, frames, vases) or on an accent wall. To balance, use softer and neutral colors throughout most of the space.

Draw inspiration from nature

Nature offers a rich palette of colors that can be a great reference for creating harmonious combinations. Shades of green from plants, blues from oceans, browns from earth, and shades of yellow and orange from sunsets are examples of natural combinations that can be applied in decoration to create a balanced and pleasant project.

Trends in color palettes for decoration


Currently, the minimalism of neutral colors continues to be in vogue and is often combined with pops of strong colors for a contemporary style. Earthy tones and natural greens stand out among preferences as they evoke a connection with the external projects and promote biophilia. In addition, monochromatic palettes, with tonal variations of a single color, are also gaining space by offering simplicity and sophistication. By investing in these trends, an ageless design filled with character and personality is created.

Inspirations for combining colors in decoration