Which colours give a calm and cool feeling?

Correct answer: Blue green and purple

Colours are often grouped by the feelings and visual temperature they suggest. Blue, green, and purple are commonly called cool colours because they are associated with water, foliage, shade, or distant spaces. In visual design, these colours can create an impression of calmness, quietness, freshness, or coolness, although the final effect can also depend on context and intensity.

Choice A contains the standard cool-colour group. Red, yellow, and orange are generally warm colours and tend to suggest heat, energy, or excitement. The other combinations mix warm, neutral, or contrasting colours, so they do not give the clearest standard answer. Thus blue, green, and purple best match the calm and cool feeling described.