Which design principle can be represented through color, size, or textures?

The principle that can be represented through color, size, or textures is accent. In floral design, accent refers to the elements that are meant to draw attention to specific areas of a composition or to create focal points within a design. This can be achieved by using contrasting colors to make certain flowers stand out, varying sizes to create visual interest, or incorporating different textures to add depth.

For instance, utilizing a bright, bold flower in a muted arrangement serves as an accent that can highlight specific areas of the design. Similarly, using a unique texture among commonly textured foliage can accentuate certain elements and attract the viewer's eye. The strategic use of accents is vital in guiding the viewer’s attention and enhancing the overall composition.