I am trying to find the ideal background for this personal emblem that I made to use as a mobile lock screen wallpaper. However, I am spending too much time trying to achieve the ideal background for this. Do you guys have any suggestions on what background and background color(s) would be ideal for this to seamlessly blend into? The current one just doesn't feel right enough. It'll be used for a white iPhone 5's lockscreen. I used adobe illustrator for this. I am leaning towards some gradient look, but open to suggestions. I have a weakness in picking background colors. I would appreciate feedback on the current background and how it is or isn't a good fit for the emblem.
On a side note, if this emblem looks familiar to something else, I would like to know because I would hate to unintentionally be using someone else's as my own.
Edit: So my goal is to make the emblem the center of attention. I don't want strong and dark colors as the background as it tends to take away the attention from the emblem. Light gradient scheme seems to be the best approach, but I don't know which colors to include in the gradient for this 4 color combo to fit seamlessly.