UX Caffè

Accessible Design: The Visual Rules You Should Always Follow

Colors, contrast, and legibility — how to ensure an accessible experience for everyone in your 2025 web and app projects

2025-07-01

In 2025, it’s no longer acceptable to design a website or app that excludes even a small portion of users. Whether it’s an e-commerce platform, a healthcare portal, or a personal blog, accessibility is now a design priority for designers, developers, and stakeholders alike. Not just to comply with international guidelines like WCAG 2.2, but for ethical, practical, and business reasons: more accessible interfaces are often more effective, too.

In the context of modern web design, visual accessibility plays a critical role. We’re talking about color contrast, typography choices, visibility of interactive elements, and hierarchical structure of layouts. And all of this becomes even more relevant in an era of countless devices, diverse use contexts, and varied user needs.

This article outlines the fundamental visual rules to ensure accessibility, with practical examples, tools to use in 2025, and trends shaping a more inclusive web.

Why Accessible Web Design Matters Today

Accessible design is no longer a niche or a “nice to have.” It’s a moral obligation—and in many cases, a legal one. In Europe, the European Accessibility Act, fully enforced as of 2025, requires all public and private digital products and services to meet specific accessibility standards.

But beyond the regulations, there’s a striking fact: over 15% of the world’s population lives with a disability. Many of these are visual or reading-related: color blindness, low vision, dyslexia, visual fatigue, just to name a few.

An inaccessible interface becomes an invisible barrier. On the other hand, accessible design improves usability for everyone—even for users in bright sunlight, on the move, or with tired eyes after hours of work.

5 Visual Rules for Accessible, Modern Design

1. Well-Calibrated Color Contrast

Good contrast between text and background is the first step toward legibility. According to WCAG 2.2, the minimum contrast ratios are:

• 4.5:1 for regular text
• 3:1 for large text

These ratios ensure that users with limited vision can read content without strain. Avoid light grey on white, or pastel-on-pastel combinations.

🔧 Recommended tools:

• WebAIM Contrast Checker
• Stark (Figma plugin)

2. Clear, Readable Typography

Fonts should be simple, clean, and well spaced. Prioritize sans-serif fonts like Inter, Roboto, Open Sans, or Helvetica. Recommended body text size is at least 16px, with generous line spacing (1.5 or more) to reduce eye fatigue.

Avoid excessive use of ALL CAPS or fully justified text, which can make reading harder for dyslexic users or non-native speakers.

3. Don’t Rely on Color Alone

If a feature is communicated only through color (e.g. green for “correct”, red for “error”), users with color vision deficiencies might not understand it. Always add icons, labels, or visual patterns.

💡 Example: an error message should include a ✖️ icon, red text, and a clear message—not just a colored border.

4. Consistent, Well-Structured Visual Components

All interactive elements (links, buttons, inputs) should be:

• Visible without needing hover or click
• Have a clear focus state
• Be large enough for touch (minimum 44x44px, per Apple and Google guidelines)

Avoid disappearing labels (like form placeholders), and make sure active, inactive, and selected states are always distinguishable.

5. Accessible Visual Hierarchy and Structure

Use semantic tags correctly (H1, H2, H3…) and structure content logically. Users with screen readers rely on this hierarchy to navigate efficiently.

Also ensure visual consistency: buttons should look like buttons, links should be clearly distinguishable from regular text, and CTAs should stand out clearly.

Tools to Test Visual Accessibility in 2025

The accessibility design toolkit has grown significantly. Today, designers and developers have access to:

• Stark (Figma/Sketch/Adobe XD): checks contrast, color blindness, and semantic structure in real time.
• axe DevTools (browser plugin): deep HTML analysis, visible focus checks, correct tag validation.
• Color Oracle: simulates different types of color blindness.
• Wave & Tota11y: provide visual overlays to highlight accessibility issues on any webpage.

AI-based tools—like Figma AI and Adobe Sensei—are also beginning to suggest automatic accessibility improvements as part of the design workflow.

Accessible Design Trends to Watch

By 2025, many design systems come with built-in accessibility. Google’s Material 3, Fluent UI, and IBM’s Carbon Design all include components aligned with WCAG standards.

Emerging trends include:

• Accessible dark mode: more than just inverted colors—contrast levels must remain optimal in dark themes.
• Minimal motion: fewer or optional animations (respecting the “Reduce Motion” user setting).
• Colorblind-friendly palettes: combinations that remain effective for users with deuteranopia or protanopia.
• Inclusive patterns: use of gender-neutral imagery and language, even in microcopy and placeholders.

Conclusion

Good design today must include accessibility. When an interface is accessible, it’s also more readable, more intuitive, and more universal. And this isn’t about compromising creativity—it’s about taking responsibility.

Every user deserves a seamless, dignified experience—regardless of their visual, motor, or cognitive abilities.

Investing time in accessible web design is an act of care. It means thinking beyond aesthetics and designing with empathy. In a world that’s increasingly digital, inclusion is one of the few true competitive advantages.

As designers, we have the power—and the duty—to build interfaces that welcome, communicate clearly, and leave no one behind. The visual rules outlined here are just the foundation. From here, we can create digital experiences that truly work for everyone.

And that is the future of design.