The tristimulus diagram only contains pure colours. To this must be added shades, which range from white to black.
Thus a pink contains red and some white, and so on.
For the colours you nominate, it would be a darker lavender (or a lighter violet).
lavender is a good color because it is a pretty color
Lavender is a light purple color with variations in hue, but typically there is only one shade of lavender, which falls within the purple color range.
Lavender.
Lavender
lavender
lavender
her favorite color is Lavender
lavender
lavender, lilac
Lavender
lavender
Because it reminds her of "passion." it's not the purple lavender, it's White lavender like her hair.