An artist wants yellow-orange but the mixture becomes too red. What is the correct adjustment?

Correct answer: Add a small amount of yellow

The governing concept is gradual hue correction by adjusting the mixing ratio. Yellow-orange lies between yellow and red, but it must show a stronger yellow influence than a red-orange mixture. If the paint is too red, adding a small amount of yellow shifts the balance toward yellow-orange. Blue or green may neutralise the mixture and make it dull, while black only darkens it without correcting the hue. Small additions prevent overcorrection.