Ultraviolet

Online Documentation.

An Elixir color manipulation library designed to work like chroma-js. It may not have full parity with chroma-js, but it includes most of the common operations and features.

Quick Start

Here are a few things Ultraviolet can do:

• read colors from a wide range of inputs
• analyze and manipulate colors
• convert colors into a wide range of formats
• linear, bezier, and custom interpolation in different color spaces

Here's an example of a simple read / manipulate / output chain

{:ok, color} = Ultraviolet.new("pink")

color
|> Ultraviolet.Color.darken!()
|> Ultraviolet.Color.saturate!(2)
|> Ultraviolet.Color.hex()
#=> "#ff6d93"

Aside from that, Ultraviolet can help you generate nice colors using various methods. These colors can be used, for example, as a color palette for maps or data visualization.

{:ok, scale} = Ultraviolet.scale(["#fafa6e", "#2a4858"], space: :lch)
colors = Ultraviolet.Scale.take(scale, 6)

There's a lot more to offer; the documentation contains more examples of how to use Ultraviolet.

Installation

You can install ultraviolet by adding it to your list of dependencies in mix.exs:

def deps do
  [
    {:ultraviolet, "~> 0.1.0"}
  ]
end

License

Copyright 2024 Derek Meer

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.