jj- mauve is a like lavender, a light a purple (an even mixture of red and blue, that looks niether red nor blue) that has been made lighter with white, and then the color "muddied" with either black or a very dark brown..

if you go to one of the color selectors (computer windows for color schemes and the press the morebutton you can see this)
Colors can go across the spectrum, (roy g biv) and then each color can go lighter, or darker, (tint or shade)

but 'dusty colors' like dusty rose or mauve, first go light, and then go 'dusty'.

meanwhile, i have been wondering about ultra marine blue and wondering if this is not the sourse of navy... ultramarine (i think it is a coal tar derivative that was supposed to equal the dye that was first found by the phonisians, one that is extrated from a marine worm, and yeilded a rich purple dye.)

it has strange properites, because if it is not fixed with a strong mordant, it acts as a bleach --the bluing woman used to put into laundry to make cloths whiter.

(now days, most detergents have ultra violet dyes added, that while largely invisible to human eyes, make cloths, so treated, look brighter -- they reflect more light, ultra violet and other parts of the spectrum.)