The Figures below show the measured Color Gamuts for several Picture Modes for the LG OLED TV and the Samsung LCD TV along with the Standard DCI-P3 and sRGB / Rec.709 Color Gamuts. The outermost white curve is the limits of human color vision - the horseshoe is the pure spectral colors and the diagonal is the Line of Purples. A given display can only reproduce the colors that lie inside of the triangle formed by its Red, Green and Blue primary colors. The dots in the center are the measured color of White for each of the Picture Modes along with the D65 Standard White, which is marked as a white circle. To deliver accurate image colors for standard consumer TV, movie, photo and video picture content the display must match the Standard Color Gamut and the Standard Color of White that was used to create the content. If the TV Gamut is set larger than the content it will distort the colors.
The LG OLED Cinema and Samsung LCD Movie Picture Modes are accurate matches to the sRGB / Rec.709 Standard that is used to produce over 99 percent of all current consumer content. See this Figure for the Absolute Color Accuracy measurements for the Cinema and Movie Picture Modes. Note that some of the Picture Modes are similar and their Gamuts and White Points overlap in the Figures. The white circle marking the D65 White Point is partly covered by the very accurate White Points for some of the Picture Modes.