Which light colour can be made by adding white to violet?

Correct answer: Lavender

Adding white to violet produces a lighter violet tint, commonly described as lavender. The governing concept is value change: white increases lightness while preserving the original hue family. Orange, brown, and dark green are different colour directions and cannot be obtained simply by adding white to violet. The exact appearance depends on the pigment and the amount of white, but lavender is the suitable answer.