how to define colors html code example

Example 1: how to color in html

<h1 style="color: red;">Hello</h1>

Example 2: possible colors used for html

#FFEFD5 (PAPAYAWHIP)   and

#556B2F (DARKOLIVEGREEN)

...are not web safe colors. They would get shifted to

#FFFFCC (NOT PAPAYAWHIP)   and

#666633 (NOT DARKOLIVEGREEN)