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HTML hex colors, also known as hexadecimal colors or hex codes, are a way of specifying colors in HTML and CSS using a six-character combination of numbers and letters. Hexadecimal color codes represent the intensity of the red, green, and blue (RGB) components of a color.
A hexadecimal color is specified with: #RRGGBB, where the RR (red), GG (green) and BB (blue) hexadecimal integers specify the components of the color.
Each hex code consists of a pound sign (#) followed by six characters, where each pair of characters represents the intensity of one color component. The first two characters represent the red component, the next two represent green, and the last two represent blue.
The values for each color component range from 00 (no intensity) to FF (maximum intensity), equivalent to decimal values ranging from 0 to 255.
For example, the hex code #FF0000 represents pure red, where FF represents the maximum intensity for the red component, while the green and blue components are absent (0 intensity).
Here's an example of using a hex color code in HTML:
<p style="color: #FF0000;">This text is in red.</p>
In the example above, the color property is set to #FF0000, resulting in red text.
Hexadecimal color codes offer a wide range of colors and are widely used in web design and development. They provide a concise and portable way to specify colors consistently across different platforms and devices.