Naples yellow

1a :  a poisonous pigment consisting essentially of a basic lead antimonate used as an enamel color and in oil painting —called also antimony yellow b :  any of several yellow pigments (as a mixture of chrome yellow and zinc white) substituted for Naples yellow

2 or naples yellow :  a pale to grayish yellow that is redder and stronger than wine yellow and slightly redder than cream buff —called also Nankeen, Nankin, Neapolitan yellow