Stacked Layer Opacity
Calculator
Combined opacity (%)
75
Results
- Combined opacity (%)
- 75
- Combined transparency (%)
- 25
Design and print results
| Combined opacity (%) | 75 |
| Combined transparency (%) | 25 |
formula-map diagram
- Combined opacity (%)
- 75
- Combined transparency (%)
- 25
Formula breakdown
Formula
combined = a1 + a2 × (1 − a1) (Porter-Duff 'over' operator)= 75
Note
Simplified model: these are standard prepress and typographic relationships computed on nominal values. Real press bulk, paper caliper and shrinkage, ink limits for a given profile, font metrics and binding allowances vary by supplier and by job, so confirm with your printer and a proof before going to press.