Okay, we know colorblocking isn't actually that difficult. Mix Color One with Color Two — it's pretty foolproof to execute. But, what really separates the neophytes from the pros is knowing how to come up with great color combinations. Take the sunshine-yellow blouse and maroon shorts Kate Mara wore to the Coach Summer Party on the High Line: The whole late-summer vibe the actress is channeling here really works. While these somewhat-contrasting hues may seem like they'd be at odds while hanging in your closet, you won't feel that way once you see the sartorial harmony they inspire when paired together. Think of it as a paint-by-numbers for your wardrobe — and never limit yourself to any supposed instruction sheet.
Sandro Eucalyptus Cropped Top, $245, available at Sandro; Zara Zipped Shorts with Belt, $59.90, available at Zara; kate spade new york Viex Cork Wedge Sandals, $258, available at Shopbop; Pieces of Starr Ruby Starrburst Jacket Earring, $135, available at Les Nouvelles; Rebecca Minkoff Y Necklace, $78, available at Rebecca Minkoff; ALDO Strogen Clutch, $30, available at ALDO.