The Thesis project

LucasFonts is the company of Dutch type designer
Luc(as) de Groot.

Luc(as) de Groot is mostly known for his Thesis project. Besides these and other retail fonts available via our web shop, LucasFonts offers every possible kind of service in adapting fonts to your needs and designing customized glyphs or complete typefaces. Contact

With Thesis, Luc(as) de Groot pioneered the concept of the all-purpose type system or superfamily. Thesis provides the user with three compatible styles – TheSans, TheMix and TheSerif – in a range of eight weights including real italics. The Thesis family has been expanded over the years (TheSans and TheMix are now available in three widths). TheSans also offers three ultra-narrow widths and several sub-families.

Speaking events

May 24–28, 2016 | Typofest in Plovdiv, Bulgaria
Workshop and talk (title to be announced)

April 27–28, 2016 | Plug&Play, Porto
Lecture, untitled

December 16, 2015 | FH Potsdam
Laudatio for Prof. Friedrich Forssman

November 7, 2015 | Forum Mediendesign, Cologne
Bis zum Äußersten

October 19, 2015 | Folha de São Paulo publishing house
Teaching lecture: Floris de S.Paulo

October 14–17, 2015 | ATypI São Paulo
Floris de S.Paulo

TheSans C5 and the Mix C5

Our new and updated packages TheSans C5 and TheMix C5 contain around 1500 glyphs per font and support standard Latin, Central European, Turkish, Baltic and Vietnamese. We also added a bunch of typographic features such as 10 different figure sets, nearly hundred ligatures, stylistic alternates, arrows and ornaments. Each packages comes in 8 weights plus italics. TheSans C5 and TheMix C5 are available as OpenType fonts and as manually hinted webfonts. You can order currently only by phone or e-mail.

Edgar Waltherts notes on Taz development

Slanted, one of Germanys most frequented blogs on graphic design and typography, has published a comprehensive article on LucasFonts latest releases Taz Wide and Taz Extended. Dive in and learn about super families, interpolation curves and hardware stores. Read more

Check out this extensive feature about Luc(as) in the latest issue of Sabine.

Check out this extensive feature about Luc(as) in issue No.4, 2010 of Sabine. Sabine is the quarterly, German language magazine published by the design department of the University of Applied Sciences in Potsdam. Read more