The contrast ratio is normally ≥ 1:3.
Ynvisible’s displays are more similar to printed graphics rather than conventional electronics displays. Color Difference (ΔE) is a more suitable metric to express the difference between the display segment in the off/neutral state and the on/activated state. The Color Difference value will change depending on the specific display color, however, our most common Gray<>Blue display has a typical Color Difference value (ΔE) of 30.