RediswrittenasRedinEnglish。Itisabasiccolor,whichdescribestheappearanceofsomethingthatemitslong-wavelengthlightinthevisiblespectrum。IntermsoftheRGBcolorsystem,redisthecolorthatisachievedbybrightestintensityofredlight,withzerointensityofgreenandblue。Thetermredisoftenusedtodescribethingssuchasstopsigns,apples,orrubies。Itisalsooftenassociatedwithdanger,strength,passionandlove。Redisalsothecolorforsocialismandcommunisminmostcountries。ThecolorredhasmanyculturalreferencesparticularlyintheEast。ItisstronglyassociatedwithChina,representinggoodluck,joyandfortune。Redisalsousedtorepresentwarningandcautioninmanydifferentcultures,suchasinIndiaandJapan。