The logo is a perfect golden rectangle. Marianne is a symbol and personification of the French Republic.
Only for fun, not "for art" : the length of the foot is equal to the length of the forearm.
The Worship of the Golden Ratio is the modern Golden Calf
Anthropometry is the measurement of humans, as well as artist's models, and is used to understand physical variation between idiosyncratic paintings; the forearm foot proportion are a really great addition.
Seeing is believing, if only painting subjects have changed the paradigm amongst the ancient leviathans and artists.