Which colour is most suitable for a distant snowy mountain peak?

Correct answer: Light blue

The governing concept is the use of colour temperature and atmospheric perspective to show distance. Light blue is a cool, pale colour associated with snow, sky and cool air; it can therefore make a distant mountain peak appear farther away and less visually forceful. Deep red, bright orange and warm yellow are warm colours that tend to advance and suggest heat or nearness, so they are less suitable for this particular distant snowy form.