Packing light for two weeks feels harder than it should, mostly because of a mental block: two weeks doesn't need two weeks of clothes if laundry is available anywhere along the way, which it almost always is.
A rough rule - packing for about one week and planning a laundry stop midway - cuts volume dramatically without leaving you short on options. Most accommodations, even budget ones, have some laundry access nearby.
Choosing 2-3 colors that all mix and match multiplies the number of outfits a small bag can produce, compared to packing items that only pair with one or two other pieces.
The goal isn't packing the absolute minimum - it's packing enough that you're not doing laundry constantly, without carrying two weeks of clothing you'll wear once each.