Which colour is placed directly opposite yellow on the traditional colour wheel?

Correct answer: Violet

In the traditional red-yellow-blue pigment colour wheel, colours directly opposite one another are complementary colours. Yellow lies opposite violet, which is made by combining red and blue. Green is positioned between yellow and blue, orange between red and yellow, and red is a primary colour rather than yellow’s opposite. Therefore, violet is the complementary colour directly opposite yellow, so option B is correct.