Judo federations have promoted another eleven who are not recognized (at that level of rank) by the Kodokan. On July 28, 2011, the promotion board of USA Judo awarded Keiko Fukuda the rank of 10th "dan", who was the first woman to be promoted to judo's highest level, albeit not a Kodokan-recognized rank. Although "dan" ranks tend to be consistent between national organizations there is more variation in the "kyū" grades, with some countries having more "kyū" grades. Although initially "kyū" grade belt colours were uniformly white, today a variety of colours are used. The first black belts to denote a
Judo dan rank in the 1880s, initially the wide obi was used; as practitioners trained in kimono, only white and black obi were used. It was not until the early 1900s, after the introduction of the judogi, that an expanded colored belt system of awarding rank was created. Judo The philosophy and subsequent pedagogy developed for judo became the model for other modern Japanese martial arts that developed from . The early history of judo is inseparable from its founder, Japanese polymath and educator , born . Kano was born into a relatively affluent family. His father, Jirosaku, was the second