In order to be successful, your products have to communicate their intent and purpose clearly. Typography helps design to deliver information to people. Font size, font width, font colour, and line lengths — all elements of typography work together to create a great user experience.
Understanding colour psychology is a key aspect of creating a colour palette that works well in digital design. While colour is sometimes thought of as a purely aesthetic choice by some designers, it is, in fact, a key component of the psychological impact of a design on users, and as such, its UX.
A well-thought-out out color palette can elevate a design from “good” to “great” while a mediocre or bad color palette can detract from a user’s overall experience and even interfere with their ability to use a site or app.