Design Principles: an Introduction to Visual Hierarchy

Visual hierarchy is a straightforward concept, and grasping the theory is actually easier than mastering the practical ability to execute a well-structured composition.

Designer Kent Mundle examines the basics of good design: hierarchy, shapes, sizes, and colors, and further explores more advanced concepts of visual perception, the mastery of which is key for great visual design.

https://www.toptal.com/designers/visual/design-principles-hierarchy?x=d