The best replacement for powder blue is powder brown tang.

The best alternatives to powder blue are rated as following:
★★★★★  powder brown tang
★★★★  regal tang
★★★  carolina blue
★★  baby blue
★  brown tang

Your alternative for powder blue is not listed? Suggest!
Speaking about powder blue, one probably shouldn't forget about yellow tang.

Other search terms related to powder blue and their ratings are:
★★★★★ yellow tang
You have in mind a companion for powder blue and it is not yet here? Propose!



Google Trends

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powder blue
powder brown tang
regal tang