One color that is mainly used is blue. If you take a look at your phone it’s safe to say that at least a third of your apps have the color blue in it. There’s a few reasons for this. Blue is the favorite color of most people. That’s because there is a lot of positive associations with it, without many negative ones. For example, the sky and water are both positive images to people. Most people would be hard pressed to find a negative association with the color blue, unlike red for example. Companies choose blue because of it’s associated familiarity and trustworthiness in the mind.

<https://thelogocompany.net/blog/infographics/psychology-color-logo-design/&gt;