PoolDates
PoolDates works out when to open and close a backyard pool in a given US town, and how to dose the water in between. Each date comes from 1991–2020 NOAA normals at the nearest weather station, which it names, and arrives as a window rather than one confident day.
Why it earned its spot
Near-black ground with a single cyan accent, and a serif display heading that switches to italic on its third line, so the sentence lands as a change of voice rather than a change of size. The hero pairs it with a globe panel labelled US SWIM SEASONS above a short-season-to-year-round gradient key, giving the climate data a shape before any number appears. Below, eleven calculators sit in a plain three-column card grid, each carrying one line describing the actual question it answers, and the state list is set as small pills rather than a wall of links. Restrained, for a subject usually sold in chlorine blue.
The colors
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