Although this 1982 novel is a work of prose rather than poetry, it establishes an important usage of the color of purple to convey complex emotional hope and darkness. Within the novel, purple comes to represent both aspirations, through purple's historical connection to royalty, as well as past haunts, as purple is also the color of bruising.
Elizabeth Lucas's 1980 poem "When I am an Old Woman" links purple to age and wisdom. It has become the foundation of the Red Hat Society, and has been marketed widely and reprinted onto products such as posters and bags since its first appearance. It is widely known but incorrectly referred to as "The Purple Poem," which demonstrates the extent to which purple is an important part of the poem itself.
In the British "Colour Poem: Purple" By Philippa Lane, purple is associated with fear ("Purple is afraid / it scuttles into corners"), whereas other poets like Elisa Elisa treat the color as an expression of pride or accomplishment ("purple sits on a throne"). Whether dark or inspirational, there is thus a long and continuing usage of purple in the emotional literary context.
In order to investigate your own interpretations of purple as a color, it can be helpful to meditate on an object or two that contain the desired shade. After meditating on this object, write down key words, phrases or memories that popped into your mind during the meditation. This may lead to a new combination of emotions regarding purple, and may help define the foundations for a fresh poem on the color.