Vexillological description
It is a rectangular field of a single colour, crimson red, with the coat of arms of the city in the centre. The rule does not fix the ratio; the usual one of 2:3 is used.
- Field (the cloth)
- crimson red, a dark red tending to garnet, with no stripes or borders.
- Coat of arms
- in the centre. It shows Hercules dressed in a lion’s skin, holding two lions by their manes, between two columns with the motto ‘Non plus ultra’.
- Border
- around the coat of arms, the inscription ‘Hercules Fundator Gadium Dominatorque’, and above it a ducal crown.






