Transparent ARGB hex value
argb, colors, hex
Solution
Transparency is controlled by the alpha channel (`AA` in `#AARRGGBB`). Maximal value (255 dec, FF hex) means fully opaque. Minimum value (0 dec, 00 hex) means fully transparent. Values in between are semi-transparent, i.e. the color is mixed with the background color.
To get a fully transparent color set the alpha to zero. `RR`, `GG` and `BB` are irrelevant in this case because no color will be visible. This means `#00FFFFFF` ("transparent White") is the same color as `#00F0F8FF` ("transparent AliceBlue"). To keep it simple one chooses black (`#00000000`) or white (`#00FFFFFF`) if the color does not matter.
In the table you linked to you'll find `Transparent` defined as `#00FFFFFF`.
Problem
The colors in this table is all not transparent. I guess the value for the `A` is set to `FF`. What is the code for transparency? For example this color FFF0F8FF (AliceBlue), to a transparent code such as `??F0F8FF` ?