What font is used in the Discourse logo?

[seanthegeek (Sean Whalen)]

What font is used in the Discourse logo? It matches the UI very well.

[simon]

It looks like Futura. Maybe this one: https://typekit.com/fonts/futura-pt

[codinghorror (Jeff Atwood)]

I believe this is covered in the blog entry

The Discourse Logo: A System Of Rainbows