Fade Colors

Apply transparency and remove the alpha channel afterwards.

Usage

fade(col, opacity = 0.5)

Arguments

col

vector of valid R colors

opacity

opacity value between 0 and 1

Value

Character vector of colors.

See also

Other color.manipulation: addOpacity(), colToOpaque(), darken(), lighten(), mixCol()

Examples

fade("tomato")
#> #FF634780 
#> "#FFB1A3" 
fade(c("tomato", "royalblue"), opacity = 0.2)
#> #FF634733 #4169E133 
#> "#FFE0DA" "#D9E1F9" 

# same tint, but the faded color hides what lies behind it
cols <- c(addOpacity("tomato", 0.4), fade("tomato", 0.4))
barplot(c(1, 1), col = cols,
        panel.first = abline(h = 0.5, lwd = 10, col = "grey35"))