Colored fiber, method for manufacturing colored fiber, and fiber product

A colored fiber comprising a fiber and a compound expressed by Formula (1):

• wherein R1 and R2 each independently represent a hydrogen atom or a substituent, R1 and R2 are optionally bonded to each other to form a ring, and of two Xs, one X represents a hydrogen atom and another X represents a group expressed by Formula (1a):
• wherein R3 to R13 each independently represent a hydrogen atom or a substituent, two adjacent groups among R3 to R13 are optionally bonded to each other to form a ring, and * represents a bonding position,
• the compound expressed by Formula (1) satisfying at least one of Requirements 1 to 3 described below:
• Requirement 1:
• at least one of R1 to R13 represents a substituent comprising a partial structure expressed by Formula (1b):
• *—X1+Y− Formula (1b):
• wherein X1+ represents a cationic group, Y− represents an anionic counterion, and * represents a bonding position,
• Requirement 2:
• R1 and R2 are bonded to each other to form a ring, the ring comprises a partial structure of X2+ (Y−), X2+ represents a cationic atom constituting a ring member atom of the ring, and Y− represents an anionic counterion, and
• Requirement 3:
• two adjacent groups among R3 to R13 are bonded to each other to form a ring, the ring comprises a partial structure of X3+ (Y−), X3+ represents a cationic atom constituting a ring member atom of the ring, and Y− represents an anionic counterion.