Knowledge Base
In-depth articles on color theory, formats, accessibility, gradients and design best practices — organized by topic for easy reference.
Color Fundamentals
What Is Color?
The science of light, wavelength and human perception.
Color Perception
How the human eye and brain process color.
The Light Spectrum
How visible light becomes the colors we see.
Primary, Secondary & Tertiary
The three tiers of the color wheel explained.
Additive vs Subtractive
Why screens and printers mix color differently.
Color Temperature
Understanding Kelvin and warm/cool perception.
Color Formats
HEX Format Explained
Complete guide to 6-digit hexadecimal color codes.
RGB Color Model
How the RGB additive model works on screens.
HSL Color Model
Hue, saturation and lightness explained.
HSV vs HSL
When to use each model and why.
CMYK Model
Print color and how it differs from screen color.
Web Color Formats
All CSS color syntaxes side by side.
Color Theory
Complementary Colors
Opposite colors and maximum contrast.
Analogous Colors
Adjacent hues for harmonious palettes.
Triadic Colors
Three evenly-spaced hues for vibrant balance.
Color Harmony Rules
All the harmony types in one comprehensive guide.
Color Psychology
How color affects emotions and behavior.
Color Meanings
Cultural and symbolic associations of each color.
Accessibility
WCAG Color Requirements
Full reference to WCAG 2.2 contrast rules.
Contrast Best Practices
How to design readable text on any background.
Accessible Palettes
Building palettes that pass WCAG AA and AAA.
Designing for Color Blindness
How to make color work for everyone.
Color-Independent Design
Designing that doesn't rely on color alone.
Testing Color Accessibility
Tools and processes for verifying color accessibility.
Design & Application
Color in UI Design
Professional techniques for interface color.
Color System Design
How to build a scalable color system.
Dark Mode Color Design
Best practices for accessible dark themes.
Website Color Schemes
How to choose colors for websites.
Color in Data Viz
Choosing colors for charts and graphs.
Color in Branding
How brands use color strategically.
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