Typography is important not only for aesthetic reasons, but also for making information user friendly to readers․ Use of accessible fonts will make websites, documents or other digital objects accessible to people with visual limitations, dyslexia, other cognitive disabilities or aging eyes․ Typography which supports function is increasingly seen as fundamental to digital communication․ It is one of the core principles of inclusive design․
When letters are legible and words are spaced correctly, friction is reduced, because the reader does less decoding and more thinking․ Therefore, designers, marketers and business owners must choose typography based on how it will be used and who will be looking at it, because the wrong decisions can create negative friction․
Why Typography Accessibility Matters
The design of text can both enable and inhibit access by people who process the visual text. For example, fonts used in print publications can be decorative, tightly spaced or based on visually similar forms․
Research from the W3C Web Accessibility Initiative defines accessibility as enabling people who experience disability to perceive, understand, navigate and interact with the web․ Typography is one of these elements of web accessibility․
Some ways in which font choices may affect usability include:
- Letter recognition: Clear shapes enable easy distinction between similar letters, such as “I,” “l” and “1”․
- Readability at different sizes: Accessible fonts maintain clarity at small and large sizes․
- Spacing and rhythm: Adequate spacing between letters and lines reduces visual strain․
- Consistency across devices: Fonts, when properly designed, should be readable on devices and resolutions․
When designers account for these factors, they are able to minimize negative impacts without sacrificing aesthetics․
Characteristics of Accessible Fonts
Before designers know the font, they can consider a good font to be one which has some of the characteristics that correlate with good readability․
Simple, Recognizable Letterforms
Accessible fonts are decorated as little as possible, making it easy for readers to tell characters apart, because each is different․
Generous Spacing
Tracking between letters and leading between lines can be too tight, forcing the eye to work more and causing the lines of text to overlap․
Open Counters
Counters are areas enclosed by letters such as “o,” “a” or “e.” Large counters improve the readability of a font, especially at small point sizes․
Balanced Stroke Weight
Medium stroke contrast fonts usually provide the best legibility on screen, as thin strokes may become invisible at lower resolutions․
Clear Differentiation Between Characters
Accessible fonts have more distinct characters, such as “I” versus “l” or “O” versus “0,” which look quite similar․
Designers are encouraged to test fonts on multiple devices and screen sizes to ensure equally readable text․
Accessible Fonts Designers Often Choose
No single typeface is universally applicable to any application or design project, but some have been proven accessible by virtue of their legibility, familiarity and availability across platforms and devices․
Arial
Arial remains one of the most popular sans-serif fonts used in web design because its simple letterforms and uniform stroke width make it easy to read on screens․ It is usually installed by default on most operating systems, so it is generally supported on all browsers and platforms․ Accordingly, Arial is often used as a fallback font in web stacks to ensure that text can be read․ While lacking in individuality, Arial’s clean, utilitarian design makes it a good choice for accessibility․
Verdana
Verdana is a screen font that Microsoft commissioned in the 1990s for use in computer interfaces and other digital content․ Because of its large x-height and wide, open letterforms, Verdana can be easier to read at small point sizes․ Its character differentiation improves visibility for visually impaired readers with similar-looking characters․ These qualities have kept Verdana prominent for websites, dashboards, and similar digital documents despite its size․
Tahoma
Tahoma has slightly more condensed proportions and tighter letter and word spacing than Verdana. But, it is at least as legible and quite readable across devices․ Tahoma is used as a common interface typeface due to its good horizontal utilization and legibility․ It is often used by web developers in navigation menus and interface elements․ Tahoma does appear in body text, although it is much less common than Verdana․
Helvetica
Thanks to its neutral, well-proportioned forms, Helvetica is common in diverse contexts. You’ll see it as a typeface for headlines, signage and user interface (UI) design․ However, the differences between letters in Helvetica can be difficult to discern at small sizes. Good spacing of the characters and careful choices of font weights are crucial. When used well, Helvetica remains a strong typographic choice for readability and accessibility․
Open Sans
Open Sans has become one of the most popular web fonts, Its legibility and versatility was specifically built for screen reading by Google․ The open letterforms and generous spacing, make it suited for paragraphs, user interfaces and responsive designs․ Open Sans is easily obtained for use in new projects due to its inclusion on Google Fonts․
Tips for Using Accessible Fonts Effectively
Choosing an appropriate typeface is only part of the typographic equation. Fonts must be used correctly in order to remain legible․
- Use sufficient font size: For screens, body text is generally 16 pixels. Smaller sizes can strain vision and comprehension․
- Maintain strong color contrast: A typeface will be difficult to read if the contrast between text and background is low. Dark type on a light background is much more readable․
- Limit font variations: Keep the font and font weight count limited to reduce noise․ Most accessible designs use one or two complementary fonts․
- Adjust line spacing: For longer passages, line height should be between 1․4 and 1․6 for readability․
- Test with real users: Although accessibility tools and guidelines point out issues, asking people for feedback gives the clearest picture of typography in-use․
Considerate typography and usability tests that account for readability can help ensure the designer’s work is accessible to as many readers as possible․
Designing With Accessible Fonts in Mind
Accessibility should never be an afterthought․ Designers can make print and online reading more accessible by using typefaces. The goal of accessibility should be woven into their design․
Good typography ensures that letterforms, spacing, and rendering are legible across devices. Typography is an essential part of accessible digital media. It’s used on websites, mobile applications and digital publications. It can positively influence reading and trust․ Ultimately, accessible fonts allow design to communicate ideas clearly to every reader․
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