The Chartreux is a medium-sized, muscular, and robust cat breed.  They have solid and fine-boned limbs and tough muscles, with broad shoulders, and a deep and well-developed chest.  Their tail is proportionate to their body length and rounded at the end.

The Chartreux has a thick but short hair coat, which is soft and slightly wool-like at the touch.  The colour of the coat is uniform throughout the body, though it can vary from light blue grey to dark blue grey.

The eyes of a Chartreux are expressive and large, with the outer corner curving slightly upward.  The colour can vary from gold, orange, to copper.
The ears are high on the head, broad at the base, slightly rounded at the edge, and as close to each other as possible.
The head is flat and large, and has the shape of a trapezium, wider at the base and narrower at the top.  The muzzle slightly protrudes outwards, and the nose is straight and large.  The cheeks and full whisker pads then convey the classic Chartreux “smile”.
The males are larger and mightier than the females, with well-developed jowls.  Females still have a good muscular structure, though tend to be slenderer.