The border-color property specifies the color of a border. You can try to run the following code to implement the border-color property:
Example
<html>
<head>
<style>
p.demo {
border:2px dashed;
border-color:#800000;
}
</style>
</head>
<body>
<p class = "demo">
Example showing border color property
</p>
</body>
</html>