What are the color representation methods supported by css3?
css3 color representation methods are: 1. Use the English name of the color to represent it, for example "red" means red; 2. Use hexadecimal notation, for example "#ffff00"; 3. Use rgb() function to represent; 4. Use the hsl() function to represent; 5. Use the rgba() function to represent it; 6. Use the hsla() function to represent it.
The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.
Principle of the three primary colors of color and light
The three primary colors of color and light areRed(Red),Green(Green), Blue (Blue) Three kinds, which can form colorful and brilliant colors.
If you really don’t remember, turn left here to Baidu Encyclopedia
Color representation methods supported by CSS3
- Use The color is represented by its English name. The English name represents a color, but the representation is very limited and difficult to remember and query.
- is represented by the color of hex. The principle of the three primary colors of color and light can be looked up in the table.
- is represented by rgb (r, g, b). The principle of three primary colors of light, red, green and blue.
- is represented by hsl (Hue, Saturation, Lightness). Hue Saturation Brightness.
- is represented by rgba (r, g, b, a). The principle of three primary colors of light, red, green, blue and transparency. a ∈ [0, 1], 0 represents complete transparency.
- is represented by hsla (Hue, Saturation, Lightness, alpha). Hue, saturation, brightness and transparency. alpha ∈ [0, 1], 0 represents complete transparency.
Example:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html" ;charset="utf-8">
<title>CSS颜色表示</title>
<style type="text/css">
div>div{
width: 400px;
height: 40px;
}
</style>
</head>
<body>
<script type="text/javascript">
for (var i = 0; i < 300; i++) {
document.write("CSS颜色表示");
}
</script>
<div style="position:absolute;top:0px">
<div style="background-color:gray;">
background-color:gray
</div>
<div style="background-color:#ff4314;">
background-color:#888
</div>
<div style="background-color:#ffff00;">
background-color:#ffff00
</div>
<div style="background-color:rgb(0, 255, 255);">
background-color:rgb(0, 255, 255)
</div>
<div style="background-color:hsl(120, 100%, 50%);">
background-color:hsl(120, 100%, 50%)
</div>
<div style="background-color:rgba(0, 255, 255, 0.5);">
background-color:rgba(0, 255, 255, 0.5)
</div>
<div style="background-color:hsla(120, 100%, 50%, 0.5);">
background-color:hsla(120, 100%, 50%, 0.5)
</div>
</div>
</body>
</html>Webpage display
Explanation
Why Adding text at the end is to verify transparency.
(Learning video sharing: css video tutorial, web front-end)
The above is the detailed content of What are the color representation methods supported by css3?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to achieve wave effect with pure CSS3? (code example)
Jun 28, 2022 pm 01:39 PM
How to achieve wave effect with pure CSS3? This article will introduce to you how to use SVG and CSS animation to create wave effects. I hope it will be helpful to you!
Use CSS skillfully to realize various strange-shaped buttons (with code)
Jul 19, 2022 am 11:28 AM
This article will show you how to use CSS to easily realize various weird-shaped buttons that appear frequently. I hope it will be helpful to you!
How to hide elements in css without taking up space
Jun 01, 2022 pm 07:15 PM
Two methods: 1. Using the display attribute, just add the "display:none;" style to the element. 2. Use the position and top attributes to set the absolute positioning of the element to hide the element. Just add the "position:absolute;top:-9999px;" style to the element.
How to implement lace borders in css3
Sep 16, 2022 pm 07:11 PM
In CSS, you can use the border-image attribute to achieve a lace border. The border-image attribute can use images to create borders, that is, add a background image to the border. You only need to specify the background image as a lace style; the syntax "border-image: url (image path) offsets the image border width inward. Whether outset is repeated;".
It turns out that text carousel and image carousel can also be realized using pure CSS!
Jun 10, 2022 pm 01:00 PM
How to create text carousel and image carousel? The first thing everyone thinks of is whether to use js. In fact, text carousel and image carousel can also be realized using pure CSS. Let’s take a look at the implementation method. I hope it will be helpful to everyone!
How to enlarge the image by clicking the mouse in css3
Apr 25, 2022 pm 04:52 PM
Implementation method: 1. Use the ":active" selector to select the state of the mouse click on the picture; 2. Use the transform attribute and scale() function to achieve the picture magnification effect, the syntax "img:active {transform: scale(x-axis magnification, y Axis magnification);}".
css3 what is adaptive layout
Jun 02, 2022 pm 12:05 PM
Adaptive layout, also known as "responsive layout", refers to a web page layout that can automatically recognize the screen width and make corresponding adjustments; such a web page can be compatible with multiple different terminals instead of making a specific version for each terminal. . Adaptive layout was born to solve the problem of mobile web browsing, and can provide a good user experience for users using different terminals.
Does css3 animation effect have deformation?
Apr 28, 2022 pm 02:20 PM
The animation effect in css3 has deformation; you can use "animation: animation attribute @keyframes ..{..{transform: transformation attribute}}" to achieve deformation animation effect. The animation attribute is used to set the animation style, and the transform attribute is used to set the deformation style. .
