HTML colors are specified with predefined color names, or with RGB, HEX, HSL, RGBA, or HSLA values.
Color Names
In HTML, a color can be specified by using a color name:

Background Color
You can set the background color for HTML elements:
Example
<h1 style="background-color:DodgerBlue;">Hello World</h1> <p style="background-color:Tomato;">Lorem ipsum...</p>
Text Color
You can set the color of text:
<h1 style="color:Tomato;">Hello World</h1> <p style="color:DodgerBlue;">Lorem ipsum...</p> <p style="color:MediumSeaGreen;">Ut wisi enim...</p>
Border Color
<h1 style="border:2px solid Tomato;">Hello World</h1>
<h1 style="border:2px solid Dodger Blue;">Hello World</h1>
<h1 style="border:2px solid Violet;">Hello World</h1>
Color Values
In HTML, colors can also be specified using RGB values, HEX values, HSL values, RGBA values, and HSLA values. The following three <div> elements have their background color set with RGB, HEX, and HSL values: (255, 99, 71)#ff6347hsl(9, 100%, 64%) The following two <div> elements have their background color set with RGBA and HSLA values, which adds an Alpha channel to the color (here we have 50% transparency): rgba(255, 99, 71, 0.5)hsla(9, 100%, 64%, 0.5)
Example
You can set the color of borders:
h1 style="background-color:rgb(255, 99, 71);">...</h1> <h1 style="background-color:#ff6347;">...</h1> <h1 style="background-color:hsl(9, 100%, 64%);">...</h1> <h1 style="background-color:rgba(255, 99, 71, 0.5);">...</h1> <h1 style="background-color:hsla(9, 100%, 64%, 0.5);">...</h1>
HTML Colors | Color properties in HTML