Do you need a HWB code instead of CMYK?
Dopely's Converter can do it for you.
You may need the HWB code of your desired color to design your css4 pages, for which you only have the CMYK code. This tool is designed to help you.
In the CMYK code, there are four colors, including Cyan, Magenta, yellow and black. The combination of these four colors together makes black. CMYK codes are used to print color on printers.