Translate web-based HWB coordinates into standard CMYK ink percentages. Paste your HWB value to instantly calculate its CMYK equivalent for print approximation.
HWB input
Provide your colors using the CSS Color 4 hwb() format, such as hwb(188 13% 7%). The parser extracts the hue degrees and the whiteness and blackness percentages. Pure hues or low-whiteness values that sit outside typical print gamuts will be mathematically converted to their nearest printable CMYK limits.
CMYK output
The result is formatted as cmyk(c%, m%, y%, k%), breaking the color down into cyan, magenta, yellow, and key (black) percentages. This uses a standard arithmetic conversion through sRGB rather than a color-managed ICC profile. It provides a structural starting point but should be proofed against your specific printer profile for exact matches.
Batch conversion
Convert an entire list of colors by placing one HWB value per line in the input panel. The tool processes the list simultaneously, generating a matching column of CMYK outputs. Empty lines are preserved, while invalid color formats will trigger a clear error note in the output.
Visual color picker
Clicking on any line syncs the visual color picker to that specific HWB value. You can adjust the picker to visually dial in a new color, and the input string will automatically update to reflect the new HWB percentages.