It will be
2/3 of the resulting mixture.
Aqua- 2
parts of green, 5 parts of blue
Say you make
10 for both aqua and indigo paint.
70 for both,
making 20 parts for green and 50 parts for blue
Indigo- 3
parts blue, 2 parts violet
50 for both,
30 parts blue, 20 parts violet
30+50=80
80/120 or
2/3