Chameleon is a utility that converts colors from one model to another. It currently supports: Hex, RGB, CMYK, HSL, Pantone, and Keywords.

Conversion requires an input color struct, and an output color model. Example: Chameleon.convert(Chameleon.Hex.new("FFFFFF"), Chameleon.Rgb) -> %Chameleon.Rgb{r: 255, g: 255, b: 255}

If a translation cannot be made, the response will be an error tuple with the input value returned. Example: Chameleon.Color.convert(Chameleon.Hex.new("F69292"), Chameleon.Pantone) -> {:error, "No keyword match could be found for that hex value."}

In this example, there is no pantone value that matches that hex value, but an error could also be caused by a bad input value; Example: Chameleon.convert(Chameleon.Keyword.new("Reddish-Blue", Chameleon.Hex)

Pantone is designed to be used on printed work only. As such, it is disingenuous to say a pantone value can be translated to a hex value since hex values will look different depending on the device displaying them. However, if you have a pantone value and want to find a device-displayable analog, this library will work.

The package can be installed by adding chameleon to your list of dependencies in mix.exs:

def deps do
  [
    {:chameleon, "~> 2.0.0"}
  ]
end

Contributions are welcomed. Please open a pull request or file an issue with your ideas. Some ideas would be:

• add a new color model for conversion
• add functionality to generate complementary colors
• handle errors for invalid input values