Estee Lauder Bleu Electrique is a very cool-toned, medium-dark blue with a matte finish. It is a limited edition eyeshadow.
Bleu Electrique is a bright cobalt blue with a matte finish with strong, cool undertones. While it's not that uncommon for more matte eyeshadows to darken a bit on the lid, especially if applied over the natural lid (and the lid is not very dry or powdered!), it can darken as a result of coming into contact with the natural oils, what is uncommon is darkening to the degree that this did--to a blackened blue--and that it did so even over primer (I was so taken aback by how dark it got on bare skin that I also tried it over Smashbox 24HR Primer to see). It applied unevenly and had noticeable patchiness as product lifted from one area when I tried to blend and even out the color. It lasted for five and a half hours before looking almost mottled on the lid.