rgba(255,255,255,0.8) code example
Example 1: rgba white color
rgb(255,255,255) /*white*/ Hex #FFFFFF
Example 2: rgba blue color
rgb(0,0,255) /*blue*/ Hex #0000FF
rgb(255,255,255) /*white*/ Hex #FFFFFF
rgb(0,0,255) /*blue*/ Hex #0000FF