Absolutely beautiful and now retired/discontinued Le Creuset Cobalt blue cast iron casserole in size 27.
The retired Cobalt blue is described as a dark royal blue with a noticeable violet undertone. It is tricky to capture the light exact shade on the camera so you can see variations in the pictures. The true colour I would say is most accurately reflected in the 22nd and 3rd pictures.
The casserole is in superb condition with some light scratches mainly to the underside base and edges Of the base. Some light surface scratches to small areas of the exterior edge as I have pictured. There is some minor marking to very small areas of the lid upper rim.
Happy to send a video on request to potentially Capture the colour better for you but it really is a stunning colour.