A poster I made to promote the Fediverse.
The PDFs and the light version is on the Internet Archive.
This work is public domain, so feel free to do whatever you want with it; for example print it on a T-shirt!
EDIT: Low-contrast Solarized versions are now available!
It’s a poster design, not a logo. It doesn’t need to be as instantly recognizable. Putting one or three other in the background would make it a lot less visually interesting.