MAC Switch to Blue Electric Cool Eyeshadow ($21.00 for 0.07 oz.) is described as a “rich cobalt.” It’s a muted, medium-dark blue with a pearly sheen. It seemed to have good color payoff, but it had a tendency to sheer out and apply unevenly on the lid. The color wore well for eight hours before starting to fade slightly. Make Up For Ever I-22 (P, $21.00) is brighter. Dior Atlantique #4 (LE) is lighter, powder. Sleek MakeUP Acid #5 (P, $9.99) is powder, more shimmery. MAC A Sprinkle of Blues #3 (P, $21.00) is darker, powder. MAC Tonight’s Temptation #1 (LE, $21.00) is darker, brighter, powder. Urban Decay Radium (P, $18.00) is lighter, powder. Maybelline Electric Blue (P, $6.99) is darker. Buxom Bulldog (P, $18.00) is very similar. See comparison swatches / view dupes.