Color names are not (that I know of) all that official.
Some showed up decades ago on crayola crayons - such as prussian blue:
But crayola changed the name to midnight blue -
But this link backs up Boomerang's take on prussian blue -
Or, it's a white nationalist pop teen duo, according to wiki -
One of my favorite paint colors is Winsor Newton's oil color - Indigo.
I don't think of purple when I look at that:
On the other hand, there is the plant, indigo:
which has what I would call a purpleish-pink colored blossom:
and maybe I haven't seen examples of a purple-y indigo.
If you have followed paint chips in home improvement stores over the years, you'll have a sense of the wackiness involved in color naming - maybe in another life I'll get hired as a paint namer.
But - the ones I'll usually believe in started with a pigment name and are pretty standard.