Trouble is non of the cosmetic houses shades will be the exact same as another brand.
I wore YSL Touche in BR30, brilliant shade on me, then, they decided to reformulate and ad more spf etc. So now though the shade numbers are the same BR30 is far too pale on me and none of the other shades even going up are anywhere near matching me. So I had to wave bye bye to it. So now the nearest is Guerlain no2 or Chanel Beige 20 or By Terry 5 Soft Peach. LOL My favourite at the moment is Le Metier de Beaute Glow in shade 1 which strangely is darker than the shade 2 which is suppose to be for fair skin with pink undertones. Shade 1 is Ivory.
Oh I will had oxygenation(sp), yes the it looks great then actually goes darker when you apply it. Oh it happens I read it quite a lot on MUA. I think that is what is happening with the Le Metier one on me, yes I do use primer.