Hue
Hue is the attribute of color that defines its position on the spectrum, such as red, blue, or green, forming the basis of color theory in design systems.

Hue refers to the fundamental property of color that distinguishes one shade family from another. When people describe a color as red, blue, green, or yellow, they are referring to its hue. In digital design, hue is one of the three main components of the HSL (Hue, Saturation, Lightness) model, which helps designers define and manipulate colors more systematically. By adjusting hue, designers can shift colors around the spectrum while keeping brightness and saturation levels consistent.
For UX and UI designers, hue plays a vital role in building accessible and aesthetically pleasing products. Choosing the right hues influences how users perceive and interact with interfaces. A blue hue might suggest trust and professionalism, while a red hue often conveys urgency or alertness.
Accessibility is closely tied to hue. Some users have color vision deficiencies that make it difficult to distinguish certain hues, such as red and green. If designers rely solely on hue to communicate meaning, critical information may be missed. Accessible products use hue in combination with other indicators, such as icons, text labels, or patterns, ensuring that meaning does not depend solely on color perception.
Real-world examples illustrate how hue functions across digital products. Google uses distinct hues across its suite of products, blue for Gmail, red for YouTube, green for Sheets, to create visual recognition. Traffic light systems rely on hue to communicate action states, though digital versions often pair colors with icons to improve accessibility. SaaS dashboards might use different hues to separate categories of data, helping users distinguish between information types at a glance.
Hue also connects directly to cultural associations. In Western contexts, white often symbolizes purity, while in some Asian cultures it is associated with mourning. Red may signify danger in one region but prosperity in another. This means designers and product managers must consider not just the hue itself but how cultural context shapes its interpretation, especially for global products.
Learn more about this in the Hue Exercise, taken from the Color Terminology Lesson, a part of the Design Terminology Course.
Key Takeaways
- Hue defines a color’s position on the spectrum, such as red or blue.
- Designers use hues for branding, hierarchy, and emotional impact.
- Accessibility requires pairing hues with other indicators for clarity.
- Real-world uses include product branding and data visualization.
- Cultural interpretations of hues vary across regions.
Recommended resources
Courses
UX Design Foundations
Design Terminology
UI Components I
Color Psychology
Common Design Patterns
Accessibility Foundations
Wireframing
UI Components II
UX Writing
Design Composition
Mobile Design
Typography
UX Design Patterns with Checklist Design
HTML Foundations
Enhancing UX Workflow with AI
CSS Foundations
Introduction to Figma
3D Design Foundations
Information Architecture
Apple Human Interface Guidelines
Introduction to Design Audits
Lessons
Exercises
FAQs
Hue defines the base color, such as red or green. Saturation controls how intense or muted that hue appears, while lightness adjusts how bright or dark it looks. Together, these three attributes, hue, saturation, and lightness, form the HSL model.
This distinction allows designers to create palettes with a consistent structure. By holding saturation and lightness constant while changing hue, they can produce balanced, harmonious color variations.
Many users have color vision deficiencies, meaning they cannot distinguish between certain hues. For example, red-green color blindness makes it difficult to rely on those hues for error and success states. If products communicate solely through hue, they exclude these users.
Designers solve this by pairing hue with text labels, shapes, or icons. This ensures that meaning is preserved regardless of how colors are perceived. Accessibility testing validates that hues work in practice for diverse users.
Hue carries symbolic meanings that shift across cultures. Red may be seen as danger in some regions but prosperity in others. White may symbolize purity in one culture and mourning in another. These associations affect how users interpret interfaces and branding.
Product teams working globally must research cultural color meanings before finalizing palettes. By adjusting hues for different regions, or choosing more neutral alternatives, they avoid confusion and build trust with international audiences.