What colours do you mix together to make turquoise?

Turquoise is a pastel blue-green colour. To achieve turquoise with primary colours only add 6 parts blue to 4 parts yellow and mix well. Once you have a blue green add 2 parts white to lighten the tone and mix well. Adjust the colour by adding more white as desired and continue mixing well until you have the colour of turquoise you find attractive.