Saint-Étienne had their first club crest in 1933, a simple shield that used the club’s initials, ASSE, from its full name, Association Sportive de Saint-Étienne Loire. Green was used for the shield and the initials because this was the club's colour, having previously been adopted from "Casino", the large grocery company based in the city.
In 1940 the club changed its crest, keeping the tilted ASSE letters but using an unusual shape, composed of three circles, in an art-deco style.
In 1993 the club added a red, white and blue star to the top of the crest, a symbol of the ten French championship titles that had been won by the club, even though the last Ligue 1 triumph was back in 1981.
The club's iconic green and white colours actually come from the Casino supermarket group which is based in the city.
This was a great period for the club, not only winning multiple Ligue 1 titles, but also coming agonisingly close to adding a European Cup /Champions League title to the club's honours list, losing by a single goal to Bayern Munich in the 1976 final at Hampden Park. Fans of the club often blame the defeat on Hampden Park's square goalposts, claiming that if they'd been round then two efforts that hit the woodwork would have actually gone in!