Android 8-bit 16 binary numbers represent the meaning of the color

Values begin with a # sign.

The first 2 digits represent the transparency of the color, 00~FF, 00 indicates that the color is completely transparent, and FF indicates that the color is completely opaque.

The latter 6 digits represent the RGB value of the color. such as: 000000 for Black, ffffff for white, ff0000 for red, 00ff00 for Green, 0000ff for blue, ffff00 for yellow.

The following is an example of the background color of the slide-by menu (set to yellow here), which describes transparency.

1. Set the yellow transparency to FF (indicating that the color is completely opaque):

As follows:

2. Set the yellow opacity to 00 (indicating that the color is completely transparent):

As follows:

3. Set the yellow transparency to BB, since BB is between 00 and FF and closer to FF, the content behind the yellow will be blurred and the degree of blurring is relatively high.

As below, the text behind the yellow (Fragment1, Fragment2 ...) become more blurred.

Android 8-bit 16 binary numbers represent the meaning of the color