MAC Blue Fountain Fluidline ($17.50 for 0.10 oz.) is described as a “dark green blue.” It’s a medium-dark blue with subtle, cool undertones and a mostly matte finish. It had semi-opaque color payoff in a single stroke, and it was buildable to mostly opaque coverage in two to three layers. On me, it lasted for twelve hours without fading or migrating. MAC Mountain Air (P, $20.00) is more shimmery, darker (95% similar). Lethal Cosmetics Threshold (P, $15.50) is warmer (90% similar). MAC Blue Peep (P, $16.00) is lighter, warmer (90% similar). See comparison swatches / view dupes side-by-side.

MAC Darkness of Calm Fluidline ($17.50 for 0.10 oz.) is described as a “dark espresso.” It’s a muted, blackened brown with subtle, warm undertones and a satin finish–just a little sheen to it. It had semi-opaque pigmentation with a lightly creamy consistency that was easy to draw lines with but didn’t take forever to set. Once dry, the color lasted for twelve hours with no movement or breakdown. ColourPop Bustier (LE, $7.00) is darker (95% similar). Urban Decay Smokeout (LE, $22.00) is more shimmery (95% similar). MAC Lowlights (P, $16.00) is darker, cooler (90% similar). Marc Jacobs Beauty (Iron)y (P, $25.00) is cooler (90% similar). NARS Last Frontier (P, $24.00) is darker, warmer (90% similar). Marc Jacobs Beauty Blacquer Coffee (P, $25.00) is darker (90% similar). Melt Cosmetics Spliff (P, $19.00) is darker, cooler (90% similar). MAC Avenue (DC, $16.00) is cooler (90% similar). MAC Local Wares (DC, $16.00) is warmer (90% similar). ColourPop Bustier (LE, $7.00) is lighter, cooler (85% similar). Urban Decay Demolition (P, $22.00) is warmer (85% similar). NARS Last Frontier (P, $24.00) is darker (85% similar). See comparison swatches / view dupes side-by-side.

MAC Palm Tree Fluidline ($17.50 for 0.10 oz.) is described as a “charcoal with pearl.” It’s a dark gray with silver and bluish-teal pearl. It had mostly opaque coverage with a moderately creamy consistency that applied well without skipping or dragging. It had the same long-wear (twelve hours) that I typically get with Fluidlines. MAC Metropolis (LE, $16.00) is darker, warmer (95% similar). Chanel Nero Vulcanico (939) (P, $34.00) is darker, warmer (90% similar). Chanel Gris Scintillante (P, $29.00) is more shimmery, lighter, warmer (90% similar). MAC Clay (P, $17.00) is warmer (90% similar). MAC Steelpoint (P, $17.00) is warmer (90% similar). Melt Cosmetics 125 Years (LE, $19.00) is less shimmery, lighter, warmer (85% similar). Stila Triggerfish (P, $22.00) is more shimmery, lighter, warmer (85% similar). Marc Jacobs Beauty (Stone)Fox (58) (P, $26.00) is more shimmery, lighter, warmer (85% similar). Sephora Starry Sky (DC, $10.00) is more shimmery, lighter (85% similar). Urban Decay Smoke (P, $22.00) is less shimmery, darker, warmer (80% similar). Chanel Noir Enigmatique (944) (P, $34.00) is less shimmery, darker, warmer (80% similar). See comparison swatches / view dupes side-by-side.

The MAC x Guo Pei collaboration launches online on September 24th at maccosmetics.com, and it will only be available at MAC 5th Avenue in NYC and MAC at South Coast Plaza (in southern California) for U.S. locations.

See more photos & swatches!

MAC Blue Fountain Fluidline

MAC Blue Fountain Fluidline

MAC Blue Fountain Fluidline

MAC Darkness of Calm Fluidline

MAC Darkness of Calm Fluidline

MAC Darkness of Calm Fluidline

MAC Palm Tree Fluidline

MAC Palm Tree Fluidline

MAC Palm Tree Fluidline