“Vexillolinguistics” is a term I have developed to encapsulate the descriptive language and terminology used in flag design. In short, Vexillolinguistics is the language used to describe flags.
Following is the official vexillolinguistic representation of the Flag of Sweden:
A field of blue (#006AA7) with a yellow (#FFCD00) Nordic cross extending to the edges, the vertical bar closer to the hoist. Dimensions: 5:2:9 horizontally, 4:2:4 vertically, overall aspect ratio 5:8.