Why Blue Is Linked with High Intelligence

Whether choosing clothes for the wardrobe, a mobile phone or a wall colour, our favourite colours can seem entirely random. More recent research, however, suggests they may reflect more than simple taste. One shade in particular stands out: it repeatedly appears among people who think in a structured way, cope with stress more effectively and have a high intelligence quotient.

How colours shape our thoughts and feelings

Colours do more than appeal to the eye: they can affect our mood, body and behaviour. This has long been discussed in fields such as Feng Shui and colour therapy, while psychology is also increasingly exploring the subject.

• Red is commonly associated with energy, alertness and competition.
• Green represents nature, rest and recovery.
• Yellow is often stimulating and sociable, although it can sometimes create nervousness.
• Blue is considered calm, organised and clear – and this is where the subject becomes particularly interesting.

Every colour emits a kind of “vibration” to which our nervous system responds. Many people are instinctively drawn to shades that reflect how they feel internally: someone seeking calm may choose soft tones, whereas someone wanting to prove themselves is more likely to opt for bold colours.

Large study links colour preferences and personality

A South Korean research team surveyed and tested 854 adults aged between 20 and 60. Their aim was to establish whether colour preferences could offer clues about personality traits.

The researchers used two elements:

• An established personality model with five broad dimensions, known as the “Big Five”.
• A test in which participants were asked to associate colours with particular adjectives.

Their responses were used to create a type of “psychological colour profile”. The key finding was that people who particularly like a certain colour and wear it often tend, on average, to share similar character traits. This does not apply to every individual case, but it does indicate a pattern.

“The study’s most striking link: people who clearly choose blue often appear more structured, more responsible and emotionally more stable.”

Why blue is so often linked with high intelligence

The data analysis showed that people with a strong preference for blue score particularly highly on one personality trait: conscientiousness. This refers to people who are

• reliable,