"Be the change that you wish to see in the world.”
This is the original Hindu swastika, which is a symbol for "Eternal peace" in the Hindu culture and religion.
This is the symbol "om" which is another sign for peace in Hindu.
Mahatma Gandhi was a peaceful Indian man, who believed in non-violent protest. His was religion was Hindu as most of the people in India. Blue is a color of serenity and calm, much like Gandhi was.