This bright and subtle colour is associated with evoking feelings of passion, desire and love. A study conducted by two University of Rochester psychologists found that this rosy shade heightens attraction.
Rose Madder
Wikipedia on Rose Madder
Scroll to the bottom of page and find a list of substitutions and a song called "Rose Madder" or "Madder Red", depending on the mood, I guess. It's not a good song but thought I'd include it, just for the giggle.
Yeasayer - Madder Red
Lake Pigment
Because this term has been showing up lately in conversations, I thought this would be a good time to find out more about it..
Wikipedia on Lake Pigment