The HTML view module is meant for the most basic scenarios (like providing HTML string) and only a number of styling properties like color will be applied.
To resolve this issue and have better control over your HTML content, you should use the WebView
Apart from providing URL, you can also pass HTML string for your WebView just as you would do with HTML View. The property that needs to handle the HTML string is called src.
> and non-blue text</
Demo Angular project demonstrating the above code can be found here
With the WebView the font properties will be applied as expected.
More examples on how to use WebView module
can be found here