I actually made three designs, but I felt this one is the most cohesive. My thought process was that a blue/gold combo will stand out best, and a minimal layout will give way for the designs that can be shown in the boxes. Short descriptions accompany the designs, as well as a company background in the upper right region, below the logo.

Showing the year the company started can give off either a willingness to try something new (if the company is starting out) or breathe a sense of seniority (if the company is established already).

I must admit, in retrospect, the background could use more detail. Let me know what I can improve upon!