The flower design seen in this logo is reused from the logo of Davidville, Tumblr founder David Karp's former web development company (Later renamed to Tumblr, Inc.).
Green version
2.0 version
2007–2013
Designer:
Unknown
Typography:
Bookman Old Style
Launched:
October 2007
The flower was dropped in October 2007.
2007–2010
Wordmark on blue background
SVGS NEEDED
2010–2013
Minor changes to the shading giving it a more matte finish.
Wordmark on blue background
Sticker-style logo
SVGS NEEDED
2013–2018
Designer:
Unknown
Typography:
Bookman Old Style (modified) Gibson (brand font)
Launched:
2013
Wordmark on blue background
In 2013, the same year Tumblr got bought by Yahoo!, Tumblr updated its logo, with a flat typeface.