Maroon is a warm dark brownish red. Despite being part of the passionate red colour family, maroon is quite calming (think buddhist robes); in colour psychology, maroon is associated with control, responsibility and thoughtfulness. Perfect for ballet then!
 
The waist tie is a satin foldover elastic in black.
 
Maroon pairs particularly well with
Teal
Dusty rose
Grey
Brown
Nude
White
Gold
Black