Which one is not a primary color?
black
yellow
red
blue
Elementary art education materials, dictionaries, and electronic search engines often define primary colors effectively as conceptual colors (generally red, yellow, and blue; or red, green, and blue) that can be used to mix "all" other colors.
reach: rather globalartcolorspainting
Answers by country
black
yellow
red
blue
answers
the United States
65
Greece
12
India
23
Germany
42
Australia
12
Poland
4425
the United Kingdom
34