From PostgreSQL wiki
The official name of the project is : PostgreSQL
The first letter and the last 3 letters ( SQL ) should be capitalized, and all letters should be in the same colour, to avoid accidentally emphasising an incorrect name, such as "Postgre".
Postgres is also accepted as an alternative name.
All other names are incorrect, especially Postgre
The world's most advanced open source database
Only the first letter is capitalized.
The primary logo is an elephant head (known as Slonik)
Multiple version of the logo are available :
- 3 colors : The head is blue, the inner border is white, the outer border is black.
- 1 color : Preferred colors are blue ( on lighter backgrounds) or white (on sufficiently dark backgrounds)
In Japan, a turtle logo is used in place of the elephant due to domestic terrorist symbolism.
Use of the logo is subject to our Trademark Policy.
The font is called Strait and is available here : http://www.searchfreefonts.com/free/strait.htm
Actually that link is now dead. http://www.fonts101.com/fonts/view/Standard/16724/Strait seems to be the same font. There's another font by the same name authored by Eduardo Rodríguez Tunni which is not the right one.