From Longman Dictionary of Contemporary Englishyellowyyel‧low‧y /ˈjeləʊi $ -loʊi/ adjective CCslightly yellow The cream was thick and yellowy.
Examples from the Corpus
yellowy• He was growing tall and his fair hair was going yellowy.• It was a thin, washed out, yellowy green - just the kind of grass to excite a botanist.• There are yellow or yellowy green, slimy and undigested stools.• One yellowy hank was swiped forward from the nape of his neck, while the other originated from his luxuriant left sideburn.• The room is dark, but passing cars cast yellowy shadows upon the wall. 