How do I use two or more colors in the same line of text?

Question

Good morning everyone, I’m starting to venture into php and html. My question is, if possible html read several Hex color code in one line, mixing them!

For example

Let’s assume I have a php variable in:

$cor = '#00FF00HTML#0000FFPHP';

and the goal is for html to interpret this variable with the corresponding color

<p><?php echo $cor; ?></p>

Upshot

HTMLPHP

(in case HTML turns green, and PHP turns blue)

Note: the example cited, it was only to be clearer the final objective!