A crate with color names and its values and usefull functions inluded to get similar colour name by RGB data. Based on these named-colors; Inspired heavely by https://github.com/colorjs/color-name.

Usage

extern crate color_name; // 👈 Before Rust 2018 Edition, Not necessary in Rust 2018 and later

use color_name::css::{
  // main function to trait colours
  Color,
  // enum colour names use it with Color::value(color:color)
  // Ex: Color::value(color::red);
  color,
  // for lower case colour names
  colors,
  // for snake case colour names
  Colors,
};

assert_eq!(Color::name([0, 0, 0]), "Black");
// In case there's no color match that rgb param color it return "404"
assert_eq!(Color::name([0, 1, 1]), "404");
assert_eq!(Color::name([95, 4, 1]), "404");
// to get the closest similar colour use similar() or close_to()
//NOTE: close_to() is a proxy to similar()
assert_eq!(Color::similar([0, 1, 1]), "Black");
assert_eq!(Color::similar([95, 4, 1]), "Maroon");
assert_eq!(Color::close_to([95, 4, 1]), "Maroon");

assert_eq!(Color::val().by_enum(color::white), [255, 255, 255]);
assert_eq!(Color::val().by_enum(color::indigo), [75, 0, 130]);

assert_eq!(Color::val().by_string("Indigo".to_string()), [75, 0, 130]);
// NOTE: the string can be at any case, it will be converted into Camel case
assert_eq!(Color::val().by_string("InDigo".to_string()), [75, 0, 130]);
assert_eq!(Color::val().by_string("inDigo".to_string()), [75, 0, 130]);
assert_eq!(Color::val().by_string("IndiGo".to_string()), [75, 0, 130]);
assert_eq!(Color::val().by_string("IndiGO".to_string()), [75, 0, 130]);


// for lower-case colors
use color_name::css::colors;
assert_eq!(colors::red,[255,0,0]);
assert_eq!(colors::blue,[0,0,255]);
assert_eq!(colors::yellow,[255,255,0]);
// for Snake-case colors
use color_name::css::colors;
assert_eq!(Colors::Red,[255,0,0]);
assert_eq!(Colors::Blue,[0,0,255]);
assert_eq!(Colors::Yellow,[255,255,0]);

// Enjoy it !!

Notes:

• Currently (as 2025/09) there is 148 colour name.
• All colours values are [u8;3] type ([r, g, b] in rang 0..255).
• Not found Cases:
  • The Color::name function returns a type of String; thus, the 404 (Not found code) will be in a type of String example: assert_eq!(Color::name([0, 195, 0]), "404");.
  • The Color::val().by_string function returns a type of Result<[u8; {const}], u16>; thus, the 404 (Not found code) will be in a type of Err(u16), example: assert_eq!( Color::val().by_string(String::from("MayMoonsley")), Err(404) );
• In the upcoming versions we will unify the 'Not found' cases and make both return Result; thus, it will return Err(Type) for unfound colors and be easy & performant to catch 404 cases as an Err.

Migration

use color_name::{
  //XXXXXXXXXXXXXXXXXXXX DEPRECATION XXXXXXXXXXXXXXXXXXXX
  // The following comment block will be removed in the
  // upcommin versions of the crate; Thus,  It's hightly
  // recommanded to migrate your code to the new API
  // especially it's very easy and smooth migration.
  // main function to trait colours
  Color,
  // enum colour names use it with Color::value(color:color)
  // Ex: Color::value(color::red);
  color,
  // for lower case colour names
  colors,
  // for snake case colour names
  Colors,
  //XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXxXXXXXXXXXXXXX

  //==================== NEW API 1.2 ====================
  css::{
    // main function to trait colours
    Color,
    // enum colour names use it with Color::value(color:color)
    // Ex: Color::value(color::red);
    color,
    // for lower case colour names
    colors,
    // for snake case colour names
    Colors,
  },
};


// Enjoy the NO CHANGES on your code it will just works !!

Todo

• Add script to auto generate the following files from csv file:
  • css/constants.rs.
• Improve the whole crate to be able to eliminate these above files.
• Improve the whole crate to be more dynamic and able to extend it with other crates.

Licence

MIT Or Apache 2 Licenses