Girl with a Pearl Earring

A house in Delft.

...

Jan: What color for the scarf, do you think?

Griet: Blue.

Jan: Blue? Just blue? There are a lot of blues. Azure, Cobalt, Egyptian, Indigo, Prussian, Sky...

Griet: Maybe purple.

Jan: How about blue with a touch of purple? Cornflower, perhaps?

Griet: Cornflower.

...