![]() In developing the AQI that we have today, the most heated discussions were about colors. "Purple is the next color in the spectrum, from yellow, to orange, to red." "Red is the color of alert, of stop signs," agrees information designer Giorgia Lupi, a partner at Pentagram. When did purple become the color most associated with danger? The purple tier is the most restrictive short of stay-at-home orders, and means restaurants can only serve outdoors, amusement parks are closed, office workers must telecommute and various other restrictions. The purple tier lets people know the virus is widespread, with more than eight percent of test results coming back positive over a seven day period. The basic idea's not unfamiliar for many of us: green is fine, yellow indicates the spread is minimal, orange is moderate, and red means substantial. A guide to county risk level tiers on California's COVID-19 site.ĬOVID-19 across California is really, really bad.Ĭalifornia, along with Ohio and Colorado, employs a color-coded system to warn about the prevalence of the Coronavirus. ![]()
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