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How to use rgb in css
- 藏色散人Original
- 2021-02-18 09:34:026060browse
How to use rgb in css: First create an HTML code sample file; then use the rgb syntax "rgb(red, green, blue)" to generate a variety of colors.
The operating environment of this article: windows7 system, HTML5&&CSS3 version, DELL G3 computer.
What does rgb mean?
RGB: A color mode, which is a color standard in the industry; it can be measured through changes in the three color channels of red (R), green (G), and blue (B) and their mutual interactions. Overlay between them to obtain a variety of colors. The RGB color standard includes almost all colors that can be perceived by human vision and is one of the most widely used color systems currently.
In css we can use the RGB standard to set color values, which requires the css rgb() function.
css rgb() function
rgb() function uses the superposition of three colors: red (R), green (G), and blue (B) to generate each color. Various colors.
RGB means red, green, blue (English: Red, Green, Blue).
Red (R) An integer between 0 and 255, representing the red component of the color. .
Green (G) An integer between 0 and 255, representing the green component of the color.
Blue (B) An integer between 0 and 255, representing the blue component of the color.
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Grammar
rgb(red, green, blue)
Each parameter (red, green and blue) in rgb() has a different definition The intensity of the color, which can be a positive integer between 0 and 255, or a percentage value (from 0% to 100%).
We use a simple code example to understand the rgb() method of setting color.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
#p1 {background-color:rgb(255,0,0);}
#p2 {background-color:rgb(0,255,0);}
#p3 {background-color:rgb(0,0,255);}
#p4 {background-color:rgb(192,192,192);}
#p5 {background-color:rgb(255,255,0);}
#p6 {background-color:rgb(255,0,255);}
</style>
</head>
<body>
<p>RGB 颜色:</p>
<p id="p1">红色</p>
<p id="p2">绿色</p>
<p id="p3">蓝色</p>
<p id="p4">灰色</p>
<p id="p5">黄色</p>
<p id="p6">樱桃色</p>
</body>
</html>Rendering:
We need to pay attention to how the rgb() color value is written. The value of the rgb() function in the following code example, Some are right, and some are wrong. Pay attention to the distinction:
/* 使用正整数的取值方法*/ rgb(255, 0, 51) rgb(255, 0, 51.2) /* 错误的写法，不能是浮点数，必须为正整数*/ /* 使用%的取值方法*/ rgb(100%, 0%, 20%) rgb(100%, 0, 20%) /* 错误的写法，不能混合使用整数和百分比值 */
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