This image of the Kansas flag is in the Public Domain and can be used freely. If you use it on a webpage, a link to http://ourworldflags.com/Kansas would be very much appreciated.
The flag of Kansas
The official flag of Kansas is represented by a dark-blue silk
rectangle arranged horizontally with the state seal aligned in the
center. Above the seal is a sunflower which sits above a bar of gold
and light blue.
The flag of Kansas can be pictorially described as, it consists of a
dark blue background with the great seal of Kansas in the middle of
the flag. The seal of Kansas is surmounted by a crest and the word
Kansas is located under the seal.