Build a Random Color Generator with HTML, CSS & JavaScript

Published: 05 July 2026
on channel: Code With Sahand

415

JavaScript Project: Build a Responsive Random Color Generator

In this project, you will learn how to build a functional random color generator using HTML, CSS, and JavaScript. The tutorial covers the complete development process, starting with setting up a responsive HTML5 structure and moving into styling with CSS to create a clean, grid-based layout. You will see how to use Flexbox to ensure the color containers adapt seamlessly to different screen sizes, from desktops to mobile devices.

Source code: https://www.100jsprojects.com/project...

The core of the project focuses on using JavaScript to automate the generation of 30 unique color containers. You will learn how to use the DOM to create elements dynamically, implement a for loop to populate the page, and write a custom function that generates random hexadecimal color codes. By the end of this video, you will understand how to manipulate CSS properties through JavaScript to change background colors and update text content in real time. This project is an excellent way to practice DOM manipulation and logic-based styling.

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Timestamps:
0:00 - Project Overview
1:07 - Setting Up VS Code
1:45 - Creating HTML Structure
6:15 - Styling with CSS
11:40 - Adding JavaScript Functionality
12:55 - Generating HTML Elements
15:37 - Creating Random Color Function
19:40 - Applying Colors to Containers
23:27 - Displaying Color Codes

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