The aim of this work was to explore the meaning, symbolism, psychology of colours and how they affects a person in childhood and adulthood. The theoretical starting point of this work is based on the definition of colour, on how people percieve and see colour and on basic characteristics of colour. It has been known since ancient times that colour has an effect on people. The influence of colour, symbolism and association of colours is largely related to events from childhood and from the previous positive and negative experiences of a human being. Different colours have different psychological effects on people, but the reaction to colours is inborn and transmitted genetically. From this it can be observed that colours have a similar effect on the majority of people and that a considerable number of people react to colours in the same way. Some colours such as red, yellow and orange are considered warm and active and they have a strong psychological effect on people. These colours mostly attract attention and give energy. While colours like blue, green and purple are considered cool and passive because they have a relaxing effect and reduce energy. Gray, black, white and brown are considered neutral and they do not have a significant impact as active colours, nor do they have a calming effect as passive colours. Black has the most negative effect on people. Because of their effect, colours can also be useful in therapy. Although chromotherapy is considered to be alternative medicine, research has proven the connection between colour and healing. When it comes to colours and children, colours also have a great effect and they are most often attracted to active colours, they are less attracted to passive colours because they have a cold effect, while neutral colours hinder their creativity and are monotonous to them.