The way to express color in html is 6-digit hexadecimal code and rgb or keyword_HTML/Xhtml_Webpage Production

There are three ways to represent colors in HTML, the most commonly used is the 6-digit hexadecimal code representation. For example, bgcolor=#ff0000; where # just means using a 6-digit hexadecimal color code to declare the color. The first two digits of the code, ff, represent red among the three primary colors. The range is of course 00-ff in hexadecimal, the middle two digits, 00, represent green, the last two digits, 00, represent blue, 00 represents no color, and ff represents the maximum color. powerful. So 000000 represents black, ffffff represents white, similarly ff0000 represents pure red, 00ff00 represents pure green, and 0000ff represents pure blue.

In addition, colors can also be represented by rgb(r,g,b). The r,g,b in brackets represent red, green and blue respectively in decimal numbers or percentages from 0 to 255, such as rgb(255,0 ,0) and rgb(100%,0%,0%) both represent red.

The color can also be represented by color keywords, a total of 16, which are:

Black black #000000
Maroon dark brown #800000
Green green #008000
Olive #808000
Navy #000080
Purple #800080
Teal #008080
Gray #808080
Silver #C0C0C0
Red Red #FF0000
Lime #00FF00
Yellow #FFFF00
Blue #0000FF
Fuchsia #FF00FF
Aqua #00FFFF
White #FFFFFF

For example, it can be written like this: bgcolor=red, which is equivalent to the following writing methods:

Copy code

The code is as follows:

bgcolor=rgb(255,0,0),bgcolor=rgb(100%,0%,0%),bgcolor=#ff0000;