Is a LIGHT IVORY BLONDE color considered a COOL or a WARM tone?

I don't want to end up with any reddish or brassy colors so that's why I'm steering clear from golden blondes, and the ash blondes are too dark for what I'm after. Cooler tones help to suppress the golds and reds, so I want to be sure if a Light Ivory Blonde is considered in the cool family. The brand I'm using doesn't have the base color listed. I also purchased a red/gold drabber to add to my mix, but it says to use 1/4oz. per 4oz. of color mixture, not the 2-4 drops I have read about here...does anyone know how much I should add? Any info greatly appreciated. Thanks.