If you're running them at full power, I calculated 9.9lm/W by adding the typical mcd values (3700mcd), plugging them and the 50deg beam angle into [0] to get 2.178 lumens, then dividing by the summed power rating (220mW). Of course, this is ignoring the power used by the bluetooth module, Arduino, and waste heat in the power supply.

For comparison, an incandescent bulb is 15lm/W, while the Hue bulbs are 70.6lm/W. So it's no Hue replacement, but still a cool, fun project.

[0] http://led.linear1.org/lumen.wiz