>>939021284
Noise is constrained to RGB values, meaning in SD the tone of each output pixel is determined by converting the RGB value of a pixel into a single 0-100 value representing black tone (ratio of black to white.)
Noise values tend to be in the upper percentiles since the SD process is inherently biased to higher RGB values, so images resulting from its noise are lighter. This can be easily fixed by the VAE or by increasing CFG. CFG increases work because you're biasing noise values further, which causes more low value tones. High value tones are capped at the max value for any RGB pixel so higher CFG makes more dark pixels than light.
Note this also means "dark pixels" might have high individual RGB channel values, making them appear as pure red, green and blue.