Stanford CS105: Introduction to Computers | 2021 | Lecture: 9.2 Creating Webpages: Specifying Colors

TL;DR

Learn how to specify colors on web pages using hexadecimal numbers and hexadecimal color specifications.

Transcript

welcome to exploring computing today's video is creating web pages specifying colors so if you haven't already watched the hexadecimal numbers video watch that first hexadecimal numbers are critical to working with colors on web pages for cs 105 students that video is in the same folder as this video for cs106e students we covered hex decimal numbe... Read More

Key Insights

• 😪 The intensity of red, green, and blue is specified using hexadecimal color codes in web design.
• 😪 Hexadecimal color codes consist of six hexadecimal digits, with two digits representing each color component (red, green, and blue).
• ❓ Adjustments to the intensity of each color component can be made by increasing or decreasing the corresponding hexadecimal digits.
• 🎮 The fourth pair of hexadecimal digits represents the alpha value, which controls transparency or opacity.
• 👨‍💻 Three or four digit color codes can also be used, but they offer fewer available colors compared to the standard six-digit codes.
• 👨‍💻 Colors can also be specified using percentages or decimal numbers instead of hexadecimal codes.
• 🕸️ Hue, saturation, and lightness can be used as alternative methods for specifying colors on web pages.

Questions & Answers

Q: Why are hexadecimal numbers important for working with colors on web pages?

Hexadecimal numbers represent the intensity of red, green, and blue, allowing for precise color specifications on web pages.

Q: What are web safe colors?

Web safe colors were a limited set of 211 colors that computer manufacturers agreed upon for display on computer monitors that could only show 256 colors.

Q: How many named colors are available for specifying on web pages?

There are 148 named colors available for specifying on web pages.

Q: Can modern devices only display 256 colors?

No, modern devices can display 16.7 million colors or more.

Summary & Key Takeaways

• Hexadecimal numbers are crucial for working with colors on web pages, as they represent the intensity of red, green, and blue.

• In the past, computer monitors only displayed 256 colors, but modern devices can display 16.7 million colors.

• There are 148 named colors and 16.7 million colors available for specifying colors on web pages.