What COLOUR is your name? Scientists find we link vowels with certain colours

Nearly everyone associates certain colours with different vowel sounds, according to a new study.

Research conducted by linguists found that most people have a similar idea of which colours and vowels fit with each other.

People with synaesthesia, a condition where certain colours or sounds trigger different senses, were found to choose the same colour for a particular sound.

An online test of over 1,000 people showed that most people chose the same colours when shown 16 different combinations of spoken vowels. 

The large majority of people, who don't have synaesthesia, said that 'i' matched with green or yellow, green was picked for 'e', and 'a' was mostly associated with pink or red.

'O' and 'u' were more closely associated with darker colours - 'o' was purple-blue and 'u' was blue or red.

The interactive visualisation below lets you see what colours were picked by participants when they heard certain vowel sounds.

Each participant is shown as small dots, with non-synaesthetes and below it are the synaesthetes. 

Hover over the visual to hear the sounds and colours associated with them

The colours shown here matched with the vowels listed beside them. The image two case studies from participants and shows colours as seen from a person without synaesthesia.

The colours shown here matched with the vowels listed beside them. The image two case studies from participants and shows colours as seen from a person without synaesthesia.

WHAT COLOURS  MATCHED WITH VOWELS?

 A -  Red, pink or orange

 E -  Green and orange

 I - Green and yellow

O - Blue and purple

U - Mostly blue or red

The study, conducted by Radboud University Nijmegen in the Netherlands, refers to 'vowel space'.

For example, when you say 'aa' then move to 'oo' as in boot and then to 'ee' as in beet, you have visited the three outer points of what linguists call the vowel space. 

The 16 spoken sounds were evenly distributed over this space. 

A large majority felt that 'aa' was more red than green, and 'ee' was more light than dark, whether they had synaesthesia or not. 

Vladimir Nabokov, the Russian writer of Lolita, was a synaesthete and saw colours when hearing certain vowels, but many forms of synaesthesia are possible.

Nabokov described seeing the colour of polished ebony when hearing an 'aa' sound and yellow when hearing an 'ee' sound. 

According to Mark Dingemanse, one of the researchers, there is logic to how we link sound and colour and the structure of language has an important role in this

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