Which aspect of design is emphasized through visual design principles?

The emphasis on the connection between functionality and appearance in visual design principles is crucial because it focuses on how the aesthetic aspects of a design can significantly enhance or detract from its usability and overall user experience.

Visual design principles guide designers in creating interfaces and visuals that not only look appealing but also serve their intended purpose effectively. By harmonizing functionality with appearance, designers can ensure that elements are not only visually attractive but also intuitive and easy to use. This relationship is vital, as a design that is visually appealing but doesn't function well may frustrate users, while a functional design lacking in aesthetic elements might not engage users effectively.

Understanding this balance allows UX designers to create solutions that resonate with users on both an emotional and practical level, ultimately leading to a more satisfying overall experience. It's this synergy between how something looks and how well it performs that underpins successful visual design.