Visual communication involves conveying ideas through visual elements, such as images, symbols, and text. It's an integral part of graphic design that helps effectively transmit messages and information. Techniques in visual communication include typography, imagery, and color usage.

Design principles guide the arrangement of elements in a design to create a harmonious and effective composition. They include balance, contrast, unity, and emphasis. Understanding these principles is crucial for creating aesthetically pleasing and functional designs.

Color theory provides a framework for understanding the impact of color combinations in design. It includes studying color harmony, contrast, and the emotional responses colors evoke. Designers use color theory to create visually compelling and mood-appropriate designs.

Typography involves the art and technique of arranging type in a design. It affects readability, aesthetic appeal, and the overall tone of a project. Choosing the right typography aligns with the design's purpose and enhances its effectiveness in visual communication.