I wear the exact same shades that you do in BM and tarte and had an issue color matching this. I first ordered the fair based on some feedback on another site that her fair was not super light. The color was pretty close, but was too light and washed me out - it was weird it was almost like the fair had no coverage at all but yet at the same time made me look really pale. I did notice that if I put a little bit of bronzer on it was OK. I then ordered the light 1 to try it (in the old formula I wore butter). The light 1 is supposed to be for neutral to cool undertones - I have neutral. I found the light 1 to be very yellow so there is no way I would try the light 2, which is for golden undertones. Long story short, neither color looked that great or was a perfect match. I really like the product so will keep trying - perhaps mixing the two together as fair was too light, light 1 slightly too dark. The light 1 actually looked a little better, but I had to blend it down my neck a bit because it was clear it was too dark. I hate the hassle and expense of having to buy two colors to get it to match. I will likely just go back to using the Dior hydra-life BB cream. The lightest shade in that product is a perfect match, skin looks fantastic, and it lasts all day. I can wear it alone, or buff just the tinest bit of the bare minerals over the top and it is a gorgeous finish!
Hi, I haven't used the BE or Tarte products but I can tell you that Crème (Fair 1) is extremely light. My skin is almost as fair as you can get with slight yellow undertones - I use Fair 1 and it has works really well for me. If you are fairly light to light, I would recommend L1. Hope that helps!!