A simple extension of rgb(). — RGB • bruceR

A simple extension of rgb().

Usage

RGB(r, g, b, alpha)

Arguments

r, g, b: Red, Green, Blue: 0~255.
alpha: Color transparency (opacity): 0~1. If not specified, an opaque color will be generated.

Value

"#rrggbb" or "#rrggbbaa".

Examples

RGB(255, 0, 0)  # red: "#FF0000"
#> [1] "#FF0000"
RGB(255, 0, 0, 0.8)  # red with 80\% opacity: "#FF0000CC"
#> [1] "#FF0000CC"