How to convert color name to the corresponding hexadecimal representation?

Question

For example:

blue 

converts to:

#0000FF

I wrote it as:

Color color = Color.FromName(\"blue\

Answer 1

You can use gplots package:

library(gplots)
col2hex("blue")
# [1] "#0000FF"

https://cran.r-project.org/web/packages/gplots/index.html

Inside gplots package the code for col2hex function is:

col2hex <- function(cname)
{
    colMat <- col2rgb(cname)
    rgb(
        red=colMat[1,]/255,
        green=colMat[2,]/255,
        blue=colMat[3,]/255
    )
}