<!-- General Use -->

<meta name="theme-color" content="#673AAC">

  
<!-- For light and dark mode -->
  
<meta 
    name="theme-color" 
    content="#ecd96f"
    media="(prefers-color-scheme: light)">

<meta 
    name="theme-color" 
    content="#0b3e05"
    media="(prefers-color-scheme: dark)">