This seat will fit any standard round bowl toilet.
Toto doesn't have a bisque color but the Sedona Beige is a very light beige and would probably be the closest match.
I'm sorry but they do not give the interior dimensions, here is the spec sheet for these toilet seats. They are both 14" from left to right. The SS113 is 16.5" from front to back and the SS114 is 18.5" from front to back.