When you set up an LTI integration with either Talis Aspire or Talis Elevate, your VLE/LMS might allow you to upload an image that you want to appear by the link for the LTI, e.g.
Talis has not typically provided an icon URL for this purpose because we find that most institutions prefer to use their own image with their own branding which they can customise as they wish.
For those who do want to use a Talis logo as their icon, we have the following logo available:
https://elevate.talis.com/ico/default/favicon-32x32.png
We would strongly suggest downloading this icon and hosting it on your own web server so that - if this URL ever changes - it will not result in a broken image in your VLE/LMS site.
If you do decide to use this icon, please do not make any changes to the colour or proportions or add any other elements to the icon.