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our contrast can vary depending on the lighting envrionment, its the nature of non lambertian reflective displays with optical gain

most of the time its pretty good!

in dimmer environments, you can boost contrast by boosting the backlight a bit

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The photo I linked to supposedly is how the tablet looks like in full sunlight, which I would assume would exhibit the best possible contrast. But the background is awfully dim (around #987 in the photo) (also in comparison to the white frame), and the text isn't very black (around #433). This looks like a contrast ratio of roughly 4:1. The photo probably isn't the best, e-ink displays usually have a contrast ratio of around 15:1. But that's still very low, printers can achieve a 100-200:1 contrast ratio for black ink on white paper.

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