Laundry problem, intimates were dyed blue, why do sweaters get rough?

I accidentally threw a pair of my sheer underwear in with my jeans and now they have a blue tint to them, can I get it out? how? they are a lace like material. And when I washed my sweater which was so soft on the inside I got it out of the dryer and the inside was rough and itchy not soft. What happened? Thanks
 
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