Choosing a paint colour is often treated as a question of taste. Research suggests it can also influence how people perceive and experience an interior.
A large review of psychological research found consistent associations between colours and emotions, although the researchers cautioned that these associations do not necessarily mean a particular colour will produce the same emotional response in every setting. The review examined 132 studies published between 1895 and 2022, involving more than 42,000 participants in 64 countries.
For anyone choosing colours for a home, the evidence points towards a more measured approach: consider the atmosphere a room needs, then examine how hue, brightness and saturation may contribute to that experience.
Blue and green are associated with calmer emotions
Blue and green are among the colours most consistently associated with lower-arousal, positive emotions in the research literature.
The systematic review found that blue, green, blue-green and white were more frequently connected with positive, lower-arousal emotions, including relaxation and contentment.
A separate study of 443 university students living in residences with different interior colours found that blue was the most preferred of the colours tested. The study also found a significant relationship between a preference for blue interiors and a calm mood.
That does not mean every blue room will make its occupants calm. The research indicates associations and measured preferences rather than a universal psychological effect.
Yellow and orange can create a more energetic impression
Warm colours produced a different pattern in the research.
Yellow and orange were associated with positive, high-arousal emotions in the systematic review. Yellow was frequently connected with joy, while orange was also strongly associated with positive emotional responses.
That makes such colours potential choices for rooms where a lively atmosphere is desirable. But intensity matters. The review found that colour characteristics including saturation and lightness influenced emotional associations, meaning that simply choosing a colour category does not tell the whole story.
Red can produce stronger reactions
Red stands apart from several other major colour categories.
The research review found red associated with high-arousal emotions, including both positive and negative responses. It was also more frequently associated with perceptions of power.
That makes red a particularly context-dependent colour. The same hue may be connected with excitement, passion or other positive emotions in one circumstance and anger or hostility in another.
Earlier experimental research has also examined the effects of red and blue interiors. A 2009 comparison of coloured rooms reported effects on emotional and physiological responses, with strong colours, particularly red, producing greater arousal.
White and lighter shades can change the character of a space
Colour is not only about hue.
The systematic review found that light colours were more often associated with positive emotions, while darker colours were more frequently associated with negative emotional associations.
This helps explain why choosing between a pale and deeply saturated version of the same basic colour can produce a substantially different visual environment.
A study of university residences found that interior colour affected perceptions of room lightness. The students also showed a preference for white ceilings.
For homeowners, the finding suggests that the amount of light entering a room and the brightness of the chosen paint should be considered together.
The room matters as much as the colour
Research does not support treating colour as a simple formula in which one shade automatically creates one emotion.
The systematic review found that most colour-emotion relationships were many-to-many. In other words, individual colours were associated with several emotions, while individual emotions could also be associated with several colours.
Context therefore matters.
A colour that works in a bedroom may not create the same effect in a workspace, dining area or hallway. Existing furnishings, natural light and the size of the room can also affect how a painted surface is perceived.
A 1993 study examining red, blue-green and white office interiors found no significant differences among the three groups in measures of work performance, anxiety, depression or arousal after one hour. The researchers noted that any effect may have been too small to detect under those experimental conditions or might have required longer exposure.
That finding is a useful reminder that colour should not be presented as a substitute for broader environmental or psychological factors.
How to choose a colour
The evidence suggests several practical principles.
For a room intended to feel quieter, blue or green may be reasonable starting points because those colours have been repeatedly associated with positive, lower-arousal emotions.
For spaces where a brighter or more energetic atmosphere is desired, yellow and orange have stronger associations with high-arousal positive emotions.
Red can make a more pronounced visual statement, but its emotional associations are mixed and can include both positive and negative high-arousal responses.
White and lighter shades can contribute to a brighter-feeling interior, while the evidence suggests that darker colours are more often associated with negative emotional associations.
Ultimately, paint is one part of an environment rather than a guaranteed mood-changing device. Colour psychology provides useful patterns, but individual preference and context remain important.
The best choice may therefore be less about finding a colour that supposedly creates a particular emotion and more about selecting a shade whose visual qualities suit the purpose of the room and the people who will use it.
