darker {karyoploteR} | R Documentation

## darker

### Description

Given a color, return a darker one

### Usage

    darker(col, amount=150)

### Arguments

`col` | (color) The original color. Might be specified as a color name or a "#RRGGBB(AA)" hex color definition.
`amount` | (integer, [0-255]) The fixed amount to subtract to each RGB channel (Defaults to 150).

### Details

Very simple utility function to create darker colors. Given a color, it transforms it to rgb space, adds a set amount to all chanels and transforms it back to a color.

### Value

A darker color

### See Also

`lighter`

### Examples

    darker("red")
    darker("#333333")
    darker(c("red", 3, "#FF00FF"))

[Package karyoploteR version 1.20.3 Index]