In Chapter 10, Wilde employs the Motif of the "Yellow Book", and during the fin de siècle the colour yellow became associated with decadence and moral decay, in the novel, the yellow book given to Dorian embodies these associations, symbolizing the corrupting power of decadent literature, underscoring Dorian's descent into a life of indulgence and moral degradation, influenced by the decadent ideals that the colour yellow came to represent