Which option shows both temperature contrast and value contrast?

Correct answer: Light yellow-orange and dark blue-violet

Temperature contrast compares warm and cool colour families, while value contrast compares light and dark. In option B, light yellow-orange is warm and dark blue-violet is cool, so the pair differs in both temperature and value. Option A and D are relatively close in temperature and value, while option C contains dark colours from the same cool family. Therefore B is correct.