One of the challenge of being a software developer with no design eyes is to pick that perfect color combination. If you are like me then you will find Color Schemer very handy. Just provide your base color and this tool will suggest you matching colors using matching technique such as Color Wheel, Complements, Triads, Tetrads etc.
It's just a matter of few clicks to browse through various matching colors and you can come up with some nice harmonious color schemes.
They also have online version of Color Schemer.