This is not really about the crocheted hat in the photo below. . .
Go ahead and crochet yourself a pale lavender hat, if you will.
*makes vaguely royal gesture* I give you leave to do so.
. . . However, a word of advice: If you plan on wearing said hat with that top, there's really no point in making and wearing such an unexceptional accessory. No-one is likely to notice it.