The screenshot above compares a computer generated hue bar with a photograph of the hue bar while using ColorNameHSB.exe to check hue values. The image shows that the pixel hue value at 100° on the hue scale in the photograph is about 122.01° as determined by ColorNameHSB.exe. Photograph hue is quite accurate between 170° and 230°.

Color bar photograph file Properties > Details: Color representation   sRGB.

keywords: computer monitor, video, camera, photography, BT.709, Adobe RGB, UHDTV, Rec.2020, DCI-P3