I fitted a set of H11 Diamond Vision bulbs in my fogs this morning and being 5000K I feel they match the DRL's and dipped beams really well. I know they are expensive at £50 a pair, but in the past I have paid £65 a pair for PIAA Extreme Whites (I bought H1's, H7's, W5W's and H11's) and they were very yellow (4000K) and would NEVER make the same mistake again, lol. The good thing about these is that they will still be very effective fog lights as opposed to LED bulbs where the light is nice and bright and white, but they cannot cut through the fog at all xx