IMO its almost better to base it off of color when trying to find out whats going to get you pulled over. i have 3000k (yellow) in my high beams, and 10000k (purplish) in my low beams, both housings are pointed down to not blind anyone, but ive been pulled over a few times because of the yellow light in general. And a lot of times, different manufacturers have different/ more definitive colors than others with the same temp. rating... so i like to take color into consideration more so then temp. sometimes to really know what im getting. just my 2cents...