A dark vampy crimson shade, this was initially a disappointment for me as I was looking for a bright red lipstick and 'Red Desire' sounded like it would fit the bill. It turns out that this is not aptly named as it's not at all red (one of the pitfalls of buying makeup online).
That said, it's still a lovely shade. It's too intense to be applied straight from the tube, as even with a lip brush I get really dense coverage. It looks great for evening, but it's far too dark for me for day (and I'm not shy about wearing strong lippie colours). If I blot it quite a bit, or apply it with my fingers it gives the result of a lovely dark lip stain. Staying power is outstanding - several hours after application it still looks good.
I probably wouldn't buy this again, as I find Lancome to be abit overpriced, and there's too much 'phaffing' around with this colour to get the look I want.