Purpose
This tutorial explains how ICC color management helps keep brand colors predictable across OKI, Epson ColorWorks, laser, inkjet, sheet, and roll-to-roll workflows.
1. Understand the color spaces
| Color type | Role | Production note |
|---|---|---|
| RGB | Common for images, web assets, and camera files. | Must be converted or interpreted through a source ICC profile. |
| CMYK | Common for print-ready artwork. | Should match the intended printer/media condition when possible. |
| Spot color | Named brand or technical color. | Current workflow uses spot name + user fallback color + spot separation. Official Pantone libraries require a real Pantone license. |
| White | Separate ink/toner behavior for CMYK+W printers. | White is not a normal ICC color; it is handled as a dedicated plate or object attribute. |
2. Choose profiles
Source RGB
Use sRGB for most web images. Use Adobe RGB or another profile only when the artwork was created that way.
Source CMYK
Use the embedded profile when provided. If missing, assign the expected print condition before conversion.
Destination ICC
Select a profile matching the exact printer, media, quality mode, and ink or toner set.
Rendering intent
Use perceptual for photographic images, relative colorimetric for many brand and vector workflows.
3. Soft proof before output
Soft proofing shows an approximation of the printed result using the selected output profile.
- Enable soft proof for the target printer/media profile.
- Check brand colors, gradients, black text, and images.
- Use separation preview for CMYK, white, and spot plates when available.
- Print a small physical sample before a full batch.
4. Export workflows
| Output | Color management behavior |
|---|---|
| Embed or declare the intended output condition through PDF OutputIntent when supported. | |
| TIFF / PNG | Raster export should apply the selected ICC transform or embed the intended profile where appropriate. |
| RIP package | Carry printer profile, media profile, spot separation metadata, and white plate information. |
| Driver print | Driver and operating system may also apply color management. Avoid double conversion where possible. |
| Spot separation | Named spot colors can be exported as separate raster plates for RIP/package workflows. |
5. Printer and media calibration
Use exact media
Gloss, matte, synthetic, kraft, clear, and textured media can change color dramatically.
Print a chart
Use a color chart or production target to compare expected values with printed output.
Create or obtain ICC
Use manufacturer profiles, RIP-generated profiles, or a measured custom profile.
Lock the profile
Attach the chosen profile to a media preset so operators do not select it manually every time.
6. Common issues
| Issue | Likely cause | Action |
|---|---|---|
| Dull colors | RGB converted to a small CMYK gamut or wrong media profile. | Check destination ICC and rendering intent. |
| Oversaturated output | Double color conversion by app and driver/RIP. | Use one managed conversion path. |
| Black looks gray | Rich black vs pure K mismatch or profile conversion. | Use text black rules and verify K-only objects. |
| Brand color mismatch | Spot fallback color not tuned for printer/media. | Adjust fallback value, print a swatch, or use official licensed spot data. |
| Screen differs from print | Uncalibrated monitor or wrong soft proof profile. | Calibrate display and proof against the target ICC. |