The flag of Scotland has only two colors on it. I.e white and blue. The name of this flag is Saltire. It is organized in such as manner that it shows a blue field with a white cross on its entire surface. The blue background represents the blue sky.
The white cross represents the cross of Christian martyr Saint Andrew as he is the patron saint of Scotland. It is said that the Scottish flag has been used since 832 AD when it was first used by King Oengus II.