One end of a two-sided crayon
Brown Sugar comes from Crayola's Heads 'n Tails set. These eight crayons have a color on each end and come in plastic tubes. Brown Sugar is the second color of the crayon called Sweet Brown, which is a dark red brown, #A83731.
The code #AF6E4D matches the value in the Crayola crayon color list on Wikipedia. Like most crayon codes, it is a screen estimate and not an official Crayola number. On screen, it sits between copper and raw sienna.

