Citat:
The red color of the Belarusian flag stands for the sun that symbolizes blood relation, brotherhood and the fight for a right cause. It symbolizes victory and happy life. The green color stands for the land – its fields and forests that occupied a significant part of Belarus. The green is the color of good, development, welfare and peace. The white is the color of freedom. According to one of the theories explaining the origin of the name of Belarus, the country was called White Russia (Belarus) in the old times because it had never been captured by the Tartars. The white is also the color of wisdom and spiritual purity that every Belarusian must possess
Källa:
http://www.minskguide.travel/about_belarus/belarus_history/belarus_flag.html