Taken from Pinterest.
This blackish charcoal coloured suit will create a remarkably excellent combination with a greyish or silver coloured tie. Pocket square can share the same colour family of the tie but it should not be exactly the same coloured or have same pattern of the tie, pocket square is there to add interest and if it has same tie pattern than there is no need of it. This is a dressing every men should know. Nowadays people make a common mistake of choosing exact same tie and pocket square, well that needs to be corrected. Always remember that a decent watch will add real interest in the outfit.