This what I could find on the bulb
w Operating Characteristics (Photometric)
Approx. Initial Lumens1 50,000
Approx. Mean Lumens2 45,000
Rated Average Life, Hours4 30,000
Correlated Color Temperature (CCT)3, 5 2100 K
CIE Chromaticity Approximate3 x-.515, y-.420
Color Rendering Index (CRI) 20...