Convert a Color or a RGB-color Into Hex String — ColToHex • DescTools

Convert a color given by name, by its palette index or by rgb-values into a string of the form "#rrggbb" or "#rrggbbaa".

ColToHex(col, alpha = 1)

Arguments

col: vector of any of either a color name (an element of colors()), or an integer i meaning palette()[i]. Non-string values are coerced to integer.
alpha: the alpha value to be used. This can be any value from 0 (fully transparent) to 1 (opaque). Default is 1.

Value

Returns the colorvalue in #rrggbb" or #rrggbbaa" format. (character)

Author

Andri Signorell <andri@signorell.net>

See also

HexToCol, ColToRgb, colors

Examples

ColToHex(c("lightblue", "salmon"))
#> [1] "#ADD8E6" "#FA8072"

x <- ColToRgb("darkmagenta")
x[2,] <- x[2,] + 155
RgbToCol(x)
#> [1] "gray57"

RgbToHex(c(255,0,0))
#> [1] "#ff00"