CMYK-RGB conversion using ISO Coated v2 300% (ECI)
Proposal
Create a mapping list for easy look-up and import into a database. Use steps of 5 for CMYK. For CMY use 0 to 100, i.e. 21*21*21 = 9261 variations. For K use 0 to 20, which covers all but one case in the lists at VBB public transport colors. That is 46305 variations.
Comparing two data sources
- 1 = http://www.codecrete.net/CMYK
- 2 = OSM Berlin/Sebastian [1]
| C | M | Y | K | 1 | 2 | 1 | 2 |
|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | fefefe | |||
| 100 | 0 | 0 | 0 | 00a2d3 | 00A3D3 | ||
| 0 | 100 | 0 | 0 | e00885 | |||
| 100 | 100 | 0 | 0 | 3a2996 | |||
| 0 | 0 | 100 | 0 | fae014 | FBE116 | ||
| 100 | 0 | 100 | 0 | 00a659 | 00A759 | ||
| 0 | 100 | 100 | 0 | bf1f10 | DC2A1B | ||
| 100 | 100 | 100 | 0 | 20211e | |||
| 0 | 0 | 0 | 100 | 131413 |