rgba function

Input type Output type
float, float, float, float color

The rgba function constructs a (transparent) color from four floating-point values that specify the amount of red, green, and blue, and the opacity of the color. These values can range from 0 to 1. You can also use the rgba function to create color constants.


  rgba(1, 0, 0, 1)      ; red  rgba(1, 0.5, 0, 0.5)  ; half-transparent orange  rgba(0, 0, 0, 0)      ; fully transparent black    

See Also
rgb function
hsl function
Writing direct coloring algorithms

rgba function