HEX
#
RGB
HSL

#FF0000 CSS / HTML Preview

Text with hexadecimal color #FF0000

This text has a font color of #FF0000. 

<span style="color:#FF0000;">Your text here</span>
#FF0000 border color

This element has a border color of #FF0000. 

<div style="border:2px solid #FF0000;">Content here</div>
#FF0000 background color

This paragraph has a background color of #FF0000. 

<p style="background-color:#FF0000;">Content here</p>
CSS codes 
.text {color:#FF0000;}
.background {background-color:#FF0000;}
.border {border:1px solid #FF0000;}