C

Color Theory for Developers

Understand RGB, HSL, and hex colors — build palettes and explore contrast with interactive pickers.

Web Development v1.0.0 130 uses
Step 1 of 4

Step 1: RGB & Hex

Every color on screen is made by mixing Red, Green, and Blue light. Each channel ranges from 0 (none) to 255 (full intensity).

Hex notation encodes the same RGB values as a 6-digit hexadecimal string: #RRGGBB. For example, rgb(255, 0, 0) is #FF0000 (pure red).

#80C850 rgb(128, 200, 80)

About This Lab

Color is fundamental to UI design. In this lab, you'll learn the three main color models developers use (RGB, HSL, Hex), understand color relationships like complementary and analogous colors, and check contrast ratios for accessibility. Every concept includes interactive tools you can experiment with.

How It Works

  1. 1 Read each step's explanation of color concepts
  2. 2 Use the interactive color pickers and sliders
  3. 3 Experiment with palette generation
  4. 4 Check contrast ratios for accessibility
  5. 5 Complete the quiz to test your knowledge
X Facebook LinkedIn Reddit WhatsApp Telegram Pinterest Email

More Labs in Web Development

H

HTML Forms & Validation

Web Development

Build forms with various input types and learn client-side validation with HTML5 and JavaScript.
C

CSS Variables & Custom Properties

Web Development

Learn CSS custom properties — define, inherit, override, and dynamically update variables for theming.
C

CSS Box Model

Web Development

Visualize content, padding, border, and margin layers with an interactive box model explorer.

Translate

ESC