OnePlus 13 Color Gamuts    
  Figure 1a   Color Gamuts in the Dark 0 lux
  Figure 1b   Color Gamuts in 0 to 2,000 lux

Figure 1a below shows the measured Color Gamuts for the OnePlus 13 along with the Standard sRGB / Rec.709 and DCI-P3 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 primary colors.

Selectable Color Modes
The OnePlus 13 provides 3 user selectable Color Modes:
The Vivid mode which provides a Wide Color Gamut togther with Accurate Image Contrast.
The Pro mode for DCI-P3 Content, which provides a DCI-P3 Standard Color Gamut.
The Pro mode for sRGB Content, which provides an sRGB / Rec.709 Standard Color Gamut.
The Natural mode which has Soft Muted Colors.

Accurate White Points
The dots in the center are the measured color of White for each of the Color Gamuts along with the D65 Standard White, which is marked as a white circle. To deliver accurate image colors the display must match both the Standard Color Gamut and the Standard Color of White.

Accurate Color Gamuts
The Standard Color Gamuts are marked with Black and Gray dots in Figure 1a below.
The Pro mode with DCI-P3 Content is an accurate match to the DCI-P3 Standard Color Gamut that is used to produce the new 4K UHD TV content. The Pro mode with sRGB Content is an accurate match to the sRGB / Rec.709 Standard Color Gamut that is used for most existing consumer content.

Both the Pro sRGB and Pro DCI-P3 modes are a close match to the Standard Gamuts.
See this Figure for detailed Absolute Color Accuracy measurements for each of the Color Gamuts.

Figure 1a.   Color Gamuts in the Dark 0 lux Color Gamuts

The Reduction in the Color Gamut with Ambient Light
Figure 1a above shows the Color Gamuts in 0 lux Ambient Light, which is absolute darkness.
Figure 1b below shows the reduction in the Color Gamut with increasing Ambient Light for each of the Color Modes.

For the Pro sRGB and Pro DCI-P3 modes:
At 500 lux, which corresponds to typical office lighting, the on-screen Color Gamut is reduced to 92%. At 1,000 lux, which corresponds to very bright indoor lighting or outdoor daylight with an overcast sky, the on-screen Color Gamut has fallen to 86%, and at 2,000 lux, which corresponds to typical outdoor daylight in shade, the on-screen Color Gamut has fallen to 71-72%.


Figure 1b.   Pro sRGB mode in 0 to 2,000 lux Ambient Light
The Gamut is reduced to 92% at 500 lux   86% at 1,000 lux   71% at 2,000 lux
Figure 1b.   Pro DCI-P3 mode in 0 to 2,000 lux Ambient Light
The Gamut is reduced to 92% at 500 lux   86% at 1,000 lux   72% at 2,000 lux
Pro sRGB mode in Ambient Light Pro DCI-P3 mode in Ambient Light

Figure 1b.   Vivid mode in 0 to 2,000 lux Ambient Light
At 1,000 lux, which corresponds to very bright indoor lighting, the Vivid mode Gamut shrinks
so that it is a better match to DCI-P3. At 2,000 lux the Vivid mode is a better match to sRGB.
Vivid mode Color Gamut in Ambient Light

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