Ralph Lauren Blue by Ralph Lauren 2.5 oz / 75 ml Eau De Toilette spray for women. The luscious Lauren stable of fragrances keeps growing, welcoming Blue into the fold. The clean, tropical scent evokes blue sky, seaside breezes and exotic flowers. Think water and sky, and you get the picture. Ralph Lauren blue is a blend of soft florals, with watery freshness to top it off.