Are you allowed to use parts of Steemit Logo?

I got a question that I want to get the Steemit community and also the CEO of Steemit
Hive account@dan and Hive account@ned Hive account@andrarchy

I want to use the 3 Waves from steemit, but my designer is kind of concerned about copyright and so on!

In the first setup he didnt use, but I would love to use the 3 waves so can we get in troubles by using the steemit logo, because of copyrights or what do you guys think?

()

all this logos are made by Hive account@mistermelody