Close, but "hundred" is 百. You used the wrong one 白. 白 means "white."
Incidentally, the celebration of a person's 99th birthday is called 白寿 Hakuju. This is from a word play; a hundred minus one is ninety-nine. If you remove the horizontal line 一(i.e. "one" in kanji) at the top of 百, it becomes 白 "white."