Given a Gray object on a CMYK background.
| Background object | Foreground object | |
|---|---|---|
 |
 |
|
|
Object type |
not specified |
not specified |
|
Overprint mode |
not specified |
|
|
Color space |
C: 0 % M: 100 % Y: 100 % K: 0 % |
Gray: 60 % brightness |
Gray always has a knockout effect on the underlying inks, regardless of the Gray object’s type or OPM mode. Consequently, the resulting color in the overlapping part of the objects (the intersection) will be as follows:
| Standard overprint mode (OPM 0) | Illustrator overprint mode (OPM 1) | |
|---|---|---|
| Preview |
 |
|
| Magenta plate |
 |
|
| Yellow plate |
 |
|
| Black plate |
 |
|
| Resulting color in the intersection |
 C: 0 % M: 0 % Y: 0 % K: 60 % |
C: 0 % M: 0 % Y: 0 % K: 60 % |