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css font set color

May 27, 2023 am 11:33 AM

CSS is an important tool for controlling web page style and can achieve a variety of effects. Among them, font color setting is also a common function. In HTML, we set the color of fonts by using CSS style sheets. So, how do we set the font color in CSS? This article will introduce in detail the methods and precautions for setting the color of CSS fonts.

1. Basic syntax

In CSS, the basic syntax for setting font color is as follows:

selector {
    color: value;
}
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Among them, selector represents a selector, which can be a label selector or a class selection. , ID selector, etc. color is the attribute name, used to set the font color. value is the color value to be set. You can use color name, hexadecimal color code, RGB color value or HSL color value. The usage of these color values ​​are introduced below.

2. Use color names

In CSS, we can directly use the color name to set the font color, for example:

p {
    color: red;
}
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The above code means changing the p tag The text is set to red. In addition to red, CSS also supports other color names, such as black, white, green, etc. These color names are predefined and can be used directly without additional definition.

3. Use hexadecimal color codes

In addition to using color names, CSS also supports using hexadecimal color codes to set font colors. For example:

p {
    color: #FF0000;
}
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The above code means setting the text of the p tag to red. Among them, #FF0000 is the hexadecimal color code of red, which is represented by three groups of two-digit hexadecimal numbers. Each group represents the brightness value of the three primary colors of red, green, and blue. In CSS, hexadecimal color codes can be used to precisely control color values, often used to define some specific hues or color combinations.

4. Use RGB color value

RGB color value is also a commonly used method of setting font color. In CSS, we can use the rgb() function to represent RGB color values. For example:

p {
    color: rgb(255, 0, 0);
}
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The above code also means setting the text of the p tag to red. Among them, the three parameters of the rgb() function represent the brightness values ​​of the three primary colors of red, green, and blue respectively, and the value range is 0~255. Compared with hexadecimal color codes, RGB color values ​​are more intuitive and easy to understand, and are often used for debugging and adjusting color values.

5. Use HSL color values

In addition to RGB color values, CSS also supports the use of HSL color values ​​to set font colors. HSL stands for hue, saturation and lightness and is a color model based on human visual perception. In CSS, we can use the hsl() function to represent HSL color values. For example:

p {
    color: hsl(0, 100%, 50%);
}
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The above code also means setting the text of the p tag to red. Among them, the three parameters of the hsl() function represent hue, saturation and brightness respectively. The value range of hue is 0~360 degrees, indicating the position of the color on the color wheel; the value range of saturation is 0%~100%, indicating the purity of the color; the value range of brightness is 0%~100%, Represents the brightness of a color. HSL color values ​​are more in line with human intuitive feelings than RGB color values, and the properties of colors can be adjusted more freely.

6. Notes

When using CSS to set font color, you need to pay attention to the following points:

  1. The font color setting should form a clear contrast with the background color. , otherwise it will affect the readability of the page.
  2. When selecting color values, you should consider the differences in display effects of different devices and different platforms, and try to use color values ​​with better compatibility.
  3. If you have special font color requirements, you can customize the color value, but you should avoid colors that are too bright or too dull.
  4. For different selectors, different color values ​​can be used, but coordination and consistency should be maintained.

To sum up, CSS provides a variety of methods to set font color, which is very convenient to use. When setting colors, you need to pay attention to aspects such as color contrast, compatibility, and readability, so that the page can present a beautiful and coordinated visual effect.

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