Spent Way too much time getting everything as close to possible as a son of Svanir though I have concluded I'm pretty certain they use certain dyes that are not obtainable. likewise with hair colour skin colour and tattoos. Still think I managed to get pretty close.
In certain lighting the blue is Winter Breeze in other lighting the blue is Shy blue in other lighting its sky or midday. I cant seem to figure out exactly which dye it is they use or if it even exists in the game but none the less it looks very very similar hope you enjoy.
I prefer to use the corrupted greatsword but I also use the etched hammer just because the npcs use it in game.