The HTML style
attribute is used to add styles to an element, such as color, font, size, and more.
Read on how to change the color of text in this tutorial: https://www.w3schools.com/html/html_styles.asp
Example
<!DOCTYPE html>
<html>
<body>
<p>I am normal</p>
<p style="color:red;">I am red</p>
<p style="color:blue;">I am blue</p>
<p style="font-size:50px;">I am big</p>
</body>
</html>