Convert RGB color channel values into CMYK percentages (cyan, magenta, yellow, and black). CMYK is widely used in print workflows, while RGB is the default model for screens.
How it works
The conversion uses the same mathematical relationship as the project's color helper: it computes the CMYK factors from normalized RGB values and scales them into percentages. Pure black is handled explicitly to avoid division-by-zero edge cases.
When to use it
- Translate a screen color into approximate print-oriented CMYK values.
- Compare how a palette might shift between display and printed output.
- Prepare CMYK inputs when you only have RGB numbers.
Limitations
CMYK conversions depend on ink behavior and paper/ICC profiles in real printing pipelines. This tool provides a formula-based approximation, not a profile-specific color management result.
Example
Input R=0, G=0, B=0 produces C=0, M=0, Y=0, K=100.