Thanks for posting your question in our HubSpot Community!
It is possible to add SVG code within our platform.
You can do it by uploading your SVG file to the file manager. And then you could use the image source in your webpage, blog or module with a code similar to the following:
<img src="brand-logo.svg" />
You could also find another possible workarounds or methods to add the SVG to your page within this post that may help you with your end goal
Let me know if you need further help on this.