I designed a new logo for our company, and ran into some issues with colour rendition, as I supplied the colours to our local newspapers for print. Designer is only accurate for CMYK rendition, and no other codes are even close! You can see from the screenshot the colour codes for this blue. Note that the HSL doesn't match from the colour wheel open, to that of the wheel above and to the right.
Here are 3 websites that all agree almost exactly with HEX, CMYK, RGB and HSL; again note that the CMYK code in Designer is correct!
https://www.w3schools.com/colors/colors_cmyk.asp?color=cmyk(1, 0.25, 0, 0)
I have made all of the necessary adjustments for my printing and display purposes, so I post this to help make good software better!