I’m going to throw this out there as well. I’m not saying you need to try and be trendy or whatever but there are certain colors and pallettes that are “in” right now. Again, don’t follow what everyone else does but be mindful that certain colors are not en vogue.
A look that I REALLY like is to keep things basically as white as possible. White space does amazing things for layout and UX. Then, pick a really great font family. Then, use some black or dark gray to balance it out. Then, pick one pop color and two others to compliment your featured color. That’s pretty much it. That’s a basic triad color scheme with balanced white space. Start with that.