Hi makenzi.exc,
Use the input type color which is supported in all modern browsers.
Refer below example.
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
body { font-family: Arial; font-size: 10pt; }
</style>
</head>
<body>
<input type="color" value="#61028D" />
</body>
</html>
Demo
Screenshot

Downloads
Download Sample