This shadow is a dark purple base with a satin-shimmer overlay, which turns from blue-violet to pink to red. Application over regular primer recommended.
Note: As with all our Arcanes/Exquisites, you won't be able to see the color change as dramatically while wearing because your eyes are moving with the rest of your face of course. Initial color noted is from about an arm's length away, then as it appears closer to, or angled toward, an indoor light source. Sunlight can wash out the colors and effect.
GIF captures slight colour change; in person it's stronger. Colours appear darker here than they are.