In my everlasting quest for all things color management, I stumbled on a report which showed in text format, my monitor "primaries", on Windows. I bet the same information is available somewhere on MacOS? Here's a partial listing of the DirectX report, in response to the 'dxdiag.exe' entered on the command line (an amazing wealth of information) : ------------------ System Information ------------------ Time of this report: 12/27/2019, 10:06:58 Machine name: XPS8930 Machine Id: {DD9A4370-91B8-4345-89FA-C479EE2FB635} Operating System: Windows 10 Home 64-bit (10.0, Build 18362) (18362.19h1_release.190318-1202) Language: English (Regional Setting: English) .. Snip .. Windows Dir: C:\WINDOWS DirectX Version: DirectX 12 .. Snip .. --------------- Display Devices --------------- Card name: NVIDIA GeForce GTX 1070 Manufacturer: NVIDIA Chip type: GeForce GTX 1070 DAC type: Integrated RAMDAC Device Type: Full Device (POST) Device Key: Enum\PCI\VEN_10DE&DEV_1B81&SUBSYS_33011028&REV_A1 Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER] Device Problem Code: No Problem Driver Problem Code: Unknown Display Memory: 24375 MB Dedicated Memory: 8088 MB Shared Memory: 16287 MB Current Mode: 2560 x 1440 (32 bit) (59Hz) HDR Support: Not Supported Display Topology: Internal Display Color Space: DXGI_COLOR_SPACE_RGB_FULL_G22_NONE_P709 Color Primaries: Red(0.678711,0.307617), Green(0.198242,0.700195), Blue(0.149414,0.045898), White Point(0.313477,0.329102) Display Luminance: Min Luminance = 0.500000, Max Luminance = 270.000000, MaxFullFrameLuminance = 270.000000 Monitor Name: NEC MultiSync PA271W(DisplayPort) Monitor Model: PA271W Monitor Id: NEC67DC Native Mode: 2560 x 1440(p) (59.951Hz) Output Type: Displayport External Monitor Capabilities: HDR Not Supported Display Pixel Format: DISPLAYCONFIG_PIXELFORMAT_32BPP Advanced Color: Not Supported . Snip .. It's interesting that the reported 'Primaries' chromaticities correspond to the 'Native gamut' - and not the current values, why? Yet, the White Point information is correct. Best / Roger