Background overlays are employed to improve text readability on top of background images, ensuring that the message is clear and legible. However, an overlay might be too dark if it adversely affects the user interface or the overall design. Consider the following when evaluating the darkness of an overlay:
An overlay should strike the right balance, providing sufficient contrast for legibility while still allowing the background image to support the design narrative. If the overlay obscures the image to the point where its presence becomes irrelevant, adjusting the darkness or considering a different design approach might be necessary.