Topic
Color tools
Understand common web color formats, readable contrast, and when to use hex, RGB, HSL, and browser-based converters.
Guides
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Color tools
How to convert hex to RGB for CSS
Step-by-step guide to converting hex color codes to RGB for CSS, including the math, 3-digit shorthand, the modern rgb() syntax, and adding alpha transparency.
Color tools
WCAG AA vs AAA contrast: what is the difference?
Understand WCAG AA and AAA color contrast levels, what ratios they use, and which target is realistic for most websites.
Color tools
What is color contrast and why does it matter for accessibility?
Learn what color contrast means, why it affects readability, and how to check whether text and UI colors are easy to see.
Color tools
Hex vs RGB vs HSL: what is the difference?
A plain-English explanation of hex, RGB, and HSL color formats, with CSS examples and when to use each one.