You can add color to text, rules, etc. You can also have color in a box or on an entire page and write text on top of it.
Color support comes as an additional package. So put \usepackage{color} in your document preamble to use the commands described here.
Many other packages also supplement LaTeX’s color abilities. Particularly worth mentioning is xcolor, which is widely used and significantly extends the capabilities described here, including adding ‘HTML’ and ‘Hsb’ color models.
| • Color package options | Options when you load the standard package. | |
| • Color models | How colors are represented. | |
| • Commands for color | The available commands. |
© 2007–2018 Karl Berry
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http://latexref.xyz/Color.html