The color hot pink usually serves two purposes. It can be used to show childish innocence, or a characters child-like personality. It can also be used to show a more
flirtatious personality. Hot pink is normally a color associated with girls and femininity.
Hot pink is considered a color of good health and life - we speak of people being "in the pink" or the "freshness" of a newborn babe.
Lastly, Hot pink is associated with sexuality, and purity. That is, a girl who is a virgin in heart and body. Hot pink is symbolic of pure love, for example. It is also the color used for sexual advertisements and such, to indicate the purity of the girls.