Main things to know about the Cool Summer:
Sister Season: Cool Winter
Sample best colors: Pastel Blue (full range of blues, actually), Powder Pink, Grey (most shades of Grey), Most Berry colors, Soft Fuchsia, Navy
Worst Colors: Orange, Golden Yellow, Warm Brown
Tips: The Cool Summer's primary goal is to avoid wearing warm, golden colors. Blue is a Cool Summer's best friend. Almost all shades of blue...from sky blue to Navy look great on you. Besides avoiding warm colors, make sure colors are cool and muted, but not too muted or pale. Nothing bright and clear or overpowering.
The Cool Summer flows into the Cool Winter. So it is not uncommon to be able to share some of the cool winter colors like orchid and true blue.
Keep your browns cool like cocoa and grey is always a good neutral for you. Black will be too overpowering but a soft charcoal or navy will look great.