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Lighten Colors

Source: R/lighten.R
lighten.Rd

Lighten colors by mixing them with white.

Usage

lighten(col, amount = 0.2)

Arguments

col

vector of valid R colors.

amount

numeric value between 0 and 1 specifying the amount of lightening. A value of 0 leaves the color unchanged, while 1 returns white.

Value

Character vector of hexadecimal colors.

Details

Colors are mixed linearly with white in RGB space: $$ x_{new} = x + amount \cdot (255 - x) $$

See also

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

Examples

lighten("tomato")
#> [1] "#FF826B"
lighten(c("tomato", "royalblue"), amount = 0.5)
#> [1] "#FFB1A3" "#A0B4F0"

# increasing amounts
amount <- seq(0, 1, 0.2)
barplot(rep(1, 6), col = sapply(amount, lighten, col = "tomato"),
        names.arg = amount, yaxt = "n", xlab = "amount")