The Day-Glo Color Corp. (also styled as DayGlo) is a privately held[1] American paint and pigments manufacturer based in Cleveland, Ohio.

[3] The brothers established the Fluor-S-Art Co. in 1934 to develop and sell black light paints for advertising purposes.

[3][4] They later partnered with Continental Lithograph (a subsidiary of Warner Brothers Pictures) of Cleveland, Ohio, to develop fluorescent paints for movie posters and advertising displays.

[3] During World War II, DayGlo products were used extensively by the U.S. military where high visibility was required.

Navy aircraft carriers used DayGlo's black light fluorescent paints to allow planes to land at night, an advantage enemy pilots did not have.

In 2012, Day-Glo Color Corp. was recognized as a National Historic Chemical Landmark for its development of daylight fluorescent pigments.