How real are the psychological effects of colours? Beliefs such as blue rooms being calming, the role of light, and what to consider when choosing room colours.
When moving into a new home or deciding to repaint a room, you have probably spent a long time poring over a paint catalogue. One friend says, "Paint the bedroom blue; it's calming." Another adds, "Orange suits a kitchen; it boosts the appetite." Online, lists circulate claiming "A red room increases anger" or "Green reduces anxiety". The psychological effects of colours are a subject almost everyone has an opinion about in everyday life, yet scientifically it is far more complex than we tend to think. In this article we look at how many of the common beliefs are supported by research, why the effects of colour vary from person to person, the important place of light in this picture, and what you can consider from a psychological point of view when choosing colours for your home.
The Psychological Effects of Colours: What Do Popular Beliefs Say?
There are some stock pairings that come to mind when people talk about colour psychology:
- Blue: Calm, peace, trust
- Green: Nature, balance, relaxation
- Red: Energy, passion, but also anger and tension
- Yellow: Joy, optimism, sometimes restlessness
- Orange: Warmth, sociability, appetite
- Purple: Creativity, mystery
- Black: Power, elegance, but also mourning and darkness
- White: Cleanliness, airiness, sometimes coldness
These pairings are repeated often in interior design magazines, advertising and social media. Some match our everyday experience: a deep blue sea or a lush green forest really does feel restful to many people. But jumping from there to the conclusion that "a blue wall is calming" skips many steps in between. The restful effect of the sea comes not only from its colour but also from the sound of the waves, the wide horizon, fresh air and the holiday mood.
It is also worth noticing how contradictory these lists are. The same yellow is linked with joy in one source and anxiety in another. Red is described as both "energising" and "tension-inducing". These contradictions are the first clue that colours do not have a single, fixed effect.
One reason these lists are so widespread is their commercial use. Paint companies announce a "colour of the year" every year, shops present their products in particular colours, and apps suggest "colour palettes to suit your mood". In this kind of promotion, the emotional effects of colours are often described as more definite and powerful than they are. There is nothing wrong with enjoying these stories when choosing the colour of a product; but they should not be taken as scientific knowledge. Similarly, claims about "colour energy", "aura colours" or particular colours curing particular illnesses are not supported by research.
Does a Blue Room Really Calm You Down? Research and Its Limits
The effect of colours on emotions and behaviour has long been a subject of research. However, many of the findings in this field are not as clear-cut as popular lists suggest. In general, the following can be said: colours may have some effect on mood, but this effect is often small, inconsistent and heavily dependent on context. Looking at a colour for a short time in a laboratory is not the same as living for years in a room of a particular colour.
Several factors make research difficult:
- Colour never stands alone. A colour's shade, brightness and saturation, the light in the room, the furniture, clutter and sounds all act together. What we call "blue" could be a pale sky blue or a dark navy.
- The expectation effect. Someone who believes "blue is calming" may be more inclined to report feeling calmer in a blue room.
- Personal meaning. A colour may be associated with a happy or painful memory in a person's life. A green that recalls hospital corridors may stir anxiety rather than calm in some people.
- Short-term measures. Many experiments look at the effect of being exposed to a colour for a few minutes; they say little about a long-term living environment.
For this reason, claims such as "Paint your bedroom blue and your insomnia will go away" or "A red wall increases arguments at home" go beyond what we know. A room colour is not a treatment for conditions such as sleep disorders, anxiety or depression.
What a colour makes us feel depends less on the colour itself than on the relationship we have with it.
Why Aren't the Psychological Effects of Colours the Same for Everyone?
The psychological effects of colours vary from person to person, because we perceive colours not only with our eyes but also through our culture, our memories and our state at the time.
Culture: In Turkey, the blue of the evil eye bead (nazar boncuğu) is associated with protection, the red of the henna night with joy and brides, and black often with mourning. In other cultures, the same colours may carry entirely different meanings. This is why lists of "universal colour meanings" should be approached with caution.
Personal memories: The yellow kitchen of the house you grew up in may make you feel warm; for someone else, the same yellow is a reminder of a difficult period. Colours are powerful triggers of memories.
Mood at the time: At the end of a tiring, tense day, vivid, bright colours may feel exhausting; during a low period, the same colours may add a little liveliness. The same room can feel different on different days.
Personality and preference: Some people feel at ease with simple, neutral tones; others come alive in colourful, patterned surroundings. There is no "right" colour here.
Let's say a young couple furnishing their first home paint the living room a pale grey recommended as "calming" on a home décor page. A few months later, both of them notice that the house feels "gloomy". In this living room, which gets little sun in the winter months, the grey creates dullness rather than calm. When they change one of the walls to a warm earthy tone, the home becomes more inviting. What made the difference here was not a general "psychological effect" of the colour, but how well it fitted the room's light and the couple's expectations.
Light Matters More Than Colour: Daylight, Lighting and Mood
When talking about colours, one thing is often overlooked: light. How a room feels can depend more on the amount and quality of light it receives than on the colour of its walls.
The effect of daylight on the sleep–wake cycle and on mood is a much better-known subject than the effect of colours. As the days shorten in winter, some people may experience marked low energy, increased sleep and low mood. For more information on this, take a look at our article on seasonal depression.
You might review the following about light in your home:
- Don't block daylight. Heavy curtains, items placed in front of windows and shutters kept closed all day can leave a room in the dark. Opening the curtains in the morning is a small but valuable habit.
- Choose lighting to suit the purpose. Clear, sufficient light for a desk, and warmer, dimmer light in the evening, can support the rhythm of the day.
- Be mindful of screen light in the evening. Looking at bright screens for a long time before bed can make it harder to fall asleep.
- Light colours reflect light. In rooms that get little light, pale tones can help the space feel brighter. This is a physical, not a psychological, effect of colour.
- Get outside. However much you adjust the light inside your home, a short walk outside during the day, especially in winter, is often the easiest way to get more daylight.
What to Consider Psychologically When Choosing Colours for Your Home or Room
Although colours have no "magical" effect, the influence of our surroundings on our mood cannot be denied. When choosing colours, the following questions may help:
- What will I do in this room? Sleeping, working, hosting guests and playing with children create different needs. In a room where you want to rest, you might choose tones that don't tire your eyes rather than ones that stimulate you.
- How does this colour make me feel? What matters is less what the lists say than what you feel when you look at that colour. Before buying paint, keeping a small sample on the wall for a few days and looking at it at different times of day is a good method.
- What is the light like in the room? In a north-facing room that gets little sun, cool tones may feel even colder; in a sunny room, the same colour may look airy.
- Who lives in the home? Asking everyone in the household for their views on shared spaces helps everyone feel comfortable there.
- Order before colour. Clutter, unused items piling up and half-finished jobs always in sight can create far more tension than wall colour. Sometimes what affects your mood the most is not a fresh coat of paint but a weekend spent tidying and decluttering.
At times when the cost of living is high, repainting the whole home may not fit everyone's budget. Small touches can work too: a cushion cover, a potted plant, a picture, a throw. These small changes can help you feel that the space is your own. If you are curious about how creative activities with colour can be used in anxious moments, you can also look at the topic of art activities for anxiety.
Children's Rooms and Children's Colour Choices
Parents ask similar questions about children's rooms: "Pink or blue?", "Should a lively child have calm colours?" Here too, there are no firm rules. A child's room should be a place where they can rest, play and feel safe. If possible, involving the child in choosing the colours helps them feel ownership of the room. A colour a child loves today may feel babyish to them in a few years' time; so keeping the walls simple and adding colour with items that can be changed is a practical approach.
For a lively child or one who has attention difficulties, changing the colour of the room does not markedly change their behaviour. Instead, reducing the amount of stimulation in the room, keeping toys in tidy boxes and keeping the homework corner simple may work better.
The colours children use in their drawings also often worry parents. Heavy use of black or dark colours in particular raises the question "is my child unhappy?" Yet research shows that diagnoses cannot be made from children's drawings or colour choices; a child may choose a colour because of the paint they have that day, a cartoon they watched, or simply because they like it. We discuss this separately in our article my child uses black in drawings.
When Should You Seek Professional Support?
Arranging your home, letting in more light and surrounding yourself with colours you love can help you feel better. But in some situations these are not enough. If you notice the following signs, it may help to talk to a mental health professional:
- Low mood, lack of motivation or an inability to enjoy anything, lasting for weeks
- Not wanting to leave the house, never opening the curtains, staying in bed all day
- A marked disruption to your sleep pattern, constant tiredness
- Anxiety stopping you from relaxing even at home
- Thoughts of harming yourself or ending your life
If the last point applies, call 112 (emergency services) without delay or go to your nearest emergency department.
Sometimes the feeling that "my home is gloomy, the colour of my room is suffocating me" is in fact a heaviness inside us reflected onto the outside world. Painting a wall may bring temporary relief; but if the underlying low mood or anxiety is not addressed, that heaviness may return. In psychotherapy, for example with cognitive behavioural approaches, the thoughts, daily routines and living environment that affect mood can be assessed together; light, sleep patterns and time spent at home can also be part of this assessment. If you are experiencing long-lasting low mood or swings in mood, you can find out about the support offered in depression and mood.
Frequently Asked Questions
Which colour is better for sleep in a bedroom?
There is no strong evidence that any colour markedly improves sleep. Choosing a tone that doesn't tire your eyes and feels peaceful to you, and keeping the room dark, quiet and cool, may matter more for sleep than colour.
Does the colour red really increase anger?
Red is thought to be perceived as stimulating in some contexts; but there is not enough evidence to say that it increases anger or arguments at home. What red makes you feel varies with the person, the shade and the setting.
Is colour therapy a scientific method?
Practices presented as "colour therapy" that claim particular colours cure particular illnesses are not supported by science. Colours can affect mood to some extent, but they cannot be used as a method of treatment.
Will painting my room help when I'm depressed?
Changing your surroundings can add a little liveliness, together with the feeling of being able to do something. But it is not enough on its own for depression; if symptoms persist, it is important to get support from a mental health professional.
Bu yazı genel bilgilendirme amaçlıdır; tanı veya tedavi yerine geçmez. Yaşadığınız güçlükler için bir ruh sağlığı uzmanına başvurmanız önerilir. Acil bir durumda lütfen 112'yi arayın.
Eda Erkan Alapala
Klinik Psikolog. İstanbul Kent Üniversitesi Klinik Psikoloji Tezli Yüksek Lisans mezunu; bilişsel davranışçı terapi, çocuk merkezli oyun terapisi ve çocuk-ergen psikoterapisi alanlarında eğitimlerini tamamlamıştır.
Eğitimler
