toRGB {plotly} | R Documentation

## Convert R colours to RGBA hexadecimal colour values

### Description

Convert R colours to RGBA hexadecimal colour values

### Usage

    toRGB(x, alpha = 1)

### Arguments

`x` | see the `col` argument in `col2rgb` for valid specifications
`alpha` | alpha channel on 0-1 scale

### Value

hexadecimal colour value (if is.na(x), return "transparent" for compatibility with Plotly)

### See Also

`showRGB()`

### Examples

    toRGB("steelblue")
    # [1] "rgba(70,130,180,1)"

    m <- list(
      color = toRGB("red"),
      line = list(
        color = toRGB("black"),
        width = 19
      )
    )

    plot_ly(x = 1, y = 1, marker = m)

[Package plotly version 4.8.0 Index]