Quick Checker implemented in Color Inspector ( CC Capture) is the fastest tool to get color conversions. 

 QuickStart QuickChecker

Color conversion is made to the selected RGB Profile and CMYK or n-CLR  (ECG) ICC Profile.
Additionally, sample is converted to HEX  sRGB. The user may need to upload a custom ICC Profile if conversion is made to print with higher possible accuracy.

More advanced options:

For advanced users, ChromaChecker is offering tools that can work with Color libraries or Palletes and export color conversion definitions for RIPs.  Also, The Grid tool is a solution that may help to get the closest possible values of coordinates that a given printer can reproduce.

LUT's Tool  Virtual Spot Print  Grid Tool