When we talk about design systems, we think of efficiency, consistency, and scalability. But behind every well-designed interface is a key component that often goes unnoticed: typography.
A solid typographic structure not only improves readability and aesthetics, it also simplifies development, improves accessibility, and maintains visual consistency throughout the digital ecosystem.
Key principles of typography in a design system
1. Usability
A usable typography makes it easier for c level contact list users to read and interact with content without friction. Factors such as font size, line spacing, spacing, and contrast directly impact the user experience.
2. Clarity
Clarity is non-negotiable. Distinguishable letter shapes, generous spacing, and sufficient contrast ensure immediate comprehension and reduced eye strain.
3. Hierarchy
Typographic hierarchy guides reading and helps prioritize information. Using scales of size, weight, and color allows you to scan content quickly.
Typography and accessibility: beyond WCAG
Meeting accessibility standards is just the starting point. For typography to be truly inclusive, it's necessary to go further and make conscious decisions that ensure a comfortable, barrier-free reading experience for all users.
One of the key aspects is text size : the main body should be at least 16 pixels to ensure smooth reading without straining the eyes. Contrast between the text and the background is also crucial; a minimum ratio of 4.5:1 is recommended for normal text and 3:1 for large text, so that people with low vision can read clearly.
Line spacing , or the space between lines, should be generous. A value of at least 1.5 times the font size improves readability, especially for users with dyslexia or other cognitive difficulties. It's also essential that text content be compatible with screen readers : this means avoiding embedding text within images and maintaining a clear semantic structure.
Finally, the system must allow text to be resized up to 200% without losing functionality or breaking the design , ensuring that each user can adapt the interface to their needs without complications.