With this particular bulb you get a warm white light. The brightness of a light bulb is measured in lumen, which in this case is 870 lumen.
From Amazon
Osram 48870 ECO VWFL Halogen Bulb, Warm White
Lamps 2U Direct
Osram 48870 ECO VWFL Decostar 51 50 watt Very Wide Flood Energy Saver