Haskell Logo

By Xah Lee. Date: . Last updated: .

Here are some Haskell logo i made. I hope webmasters will use it to spread Haskell. I hereby release it into public domain.

xah haskell logo 2022-01-01 d8HsW
xah haskell logo

Here's the logo using HTML+CSS:

λ → ∀ ≫ :: ⇒
<div style="display:table; border: solid thin black; text-align:center; padding:8px">
<span style="font-size:28px;">λ → ∀ ≫ :: ⇒</span><br />
<span style="font-size:2rem; font-family:'Times New Roman',serif;">Haskell</span>

Haskell Logo History

Yale Haskell logo Yale Haskell bullfrog
Yale Haskell project (~1999) used a logo that features symbols in lambda calculus including the lambda, and also a bullfrog head. Quite funny and beautiful. (the bullfrog logo origin is explained at the bottom. i.e. that of parody to Yale's bulldog logo) [ http://web.archive.org/web/19990828153125/http://www.cs.yale.edu/haskell/yale-fp.html ]
Hugs98 logo
The Haskell interpreter Hugs98 features a 3D lambda with projected shadow [ http://www.haskell.org/hugs/ ]

Here's Haskell's original logo:

Haskell language logo in 2002
Haskell Logo 2003-05 Fritz Ruehr
Haskell logo, since 2003-05. It is designed by Fritz Ruehr [http://www.willamette.edu/~fruehr/]. Superb.

It is made of 5 math symbols revolving around a big lambda. The symbols are:

Here's a simplified version:

haskell-logo c
haskell-logo c

Haskell Logo
Haskell's new logo of 2009.

This logo's concept is based on ASCII art by Darrin Thompson, and interpreted by Jeff Wheeler. It is a result of public logo contest. For detail, and many quality logo entries, see https://wiki.haskell.org/Haskell_logos/New_logo_ideas