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Method: 1. Use English words to represent colors, such as "red" to represent red; 2. Use RGB to represent colors, and the syntax is "rgb (red value, green value, blue value)"; 3. Use hexadecimal to express color, and the syntax is "#RRGGBB"; 4. Use HSL to express color, and the syntax is "hsl (hue, saturation, brightness)".
The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.
1. English words to express color
The most direct and simplest method is to use the English word of color Word representation, for example: red we can write color: red.
Disadvantages: There are thousands of colors, not every color has a corresponding English word, and there are limitations in use.
2. Hexadecimal representation of color
The components of hexadecimal color are: #RRGGBB, where RR (red), GG (green) and BB (blue), all values must be between 0 and FF. In layman's terms, the essence of hexadecimal is rgb, and every two digits represent a color. When the values of each two digits are the same, they can be abbreviated. For example, color: #ffcc00 can be abbreviated as color: #fc0.
All major browsers support hexadecimal color values and are recommended.
3. RGB represents color
In RGB, R represents red, G represents green, and B represents blue.
RGB writing method: rgb (0,0,0). Its value range is between 0-255, the larger the value, the darker the color. In addition to using numerical values, RGB can also use percentages, with values ranging from 0% to 100%. For example: RGB (0,0,255) and RGB (0%, 0%, 100%) represent the same color.
RGB representation of common colors. Red: rgb(255,0,0); White: rgb(255,255,255); Black: rgb(0,0,0)
All major browsers support RGB color values.
4. HSL represents color
HSL color values represent: hue, saturation, and brightness.
Hue is the degree on the color wheel (from 0 to 360) - 0 (or 360) is red, 120 is green, and 240 is blue. Saturation is a percentage value, 0% means shades of gray and 100% is full color. Brightness is also a percentage, 0% is black and 100% is white.
Note: IE9, Firefox, Chrome, Safari, and Opera10. Support HSL color values.
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