Illamasqua Creep is a very cool-toned, medium-dark lavender with a matte finish. It is a permanent eyeshadow.
Illamasqua Creep EyeshadowIllamasqua Creep Eyeshadow ($20.00 for 0.07 oz.) is described as a "soft lavender purple." It's a light-medium lavender purple with cool undertones and a matte finish. There are several lavender eyeshadows that I've come across, but I haven't seen anything this cool-toned. The closest shade I could think of was MAC Water & Ice #2 which is more silvered and very frosted.