Workplace harassment

Hi All,
In one of our fun at work sessions while playing dumb charades a colleague made a colour based remark to another colleague calling him dark since he had to enact the colour black.We wish to know to procedure to resolve the same.
Is written apology to the aggrieved mandatory ?
If aggrieved accepts apology, is the case closed ?
Should the management issue a notice to the colleague who harassed ?
Thanks

Its not fall under the category of POSH. On Counseling or apology letter you can closed it.

You can place the complaint before the Grievance Redressal committee and call the parties and sort out the issue