Symbol of Hesse (lion) red (in vector format). By law it is not permitted to use an official coat of arms of an public authority in Germany by private persons or companies. So in 1981 the federal state government of Hesse decided to publish a sign which could be used by everyone to show their relation to the federal state of Hesse.
http://www.hessen.de/irj/HMdI_Internet?cid=bca193cf4f82c5d5a4b45ecc90722215
Das Land Hessen / State of Hesse