Hi! As you can see both rugs I'd recommend you at least stay in the same color family so that they relate to each other. As an example if you want to use blue, you could have one rug with an overall blue pattern and the other rug a similar blue but plain or textured. Hope this helps...

I would select the rugs based on the color that compliments the room, but have a connection either with color repetition or the style/pattern.