A color conversion library for Dart. It converts all ways between rgb, hsl, hsv, hwb, cmyk, ansi, ansi16, hex strings, and CSS keywords (will round to closest). Based on color-convert by Heather Arthur.

import "package:color_convert/color_convert.dart";

void main() {
  convert.rgb.hsl(140, 200, 100); // [96, 48, 59]
  convert.keyword.rgb("blue"); // [0, 0, 255]

  var rgbChannels = convert.rgb.channels; // 3
  var cmykChannels = convert.cmyk.channels; // 4
  var ansiChannels = convert.ansi16.channels; // 1
}

Simply get the property of the from and to conversion that you"re looking for.

All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on .raw to the function.

All "from" functions have a hidden property called .channels that indicates the number of channels the function expects (not including alpha).

import "package:color_convert/color_convert.dart";

void main() {
  // Hex to LAB
  convert.hex.lab("DEADBF");         // [ 76, 21, -2 ]
  convert.hex.lab.raw("DEADBF");     // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ]

  // RGB to CMYK
  convert.rgb.cmyk(167, 255, 4);     // [ 35, 0, 98, 0 ]
  convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ]
}

All functions that accept multiple arguments also support passing an array.

Note that this does not apply to functions that convert from a color that only requires one value (e.g. keyword, ansi256, hex, etc.)

import "package:color_convert/color_convert.dart";

void main() {
  convert.rgb.hex(123, 45, 67);      // "7B2D43"
  convert.rgb.hex([123, 45, 67]);    // "7B2D43"
}

Conversions rely on an agreed upon "full-scale" value for each of the channels. Listed here are those values for the most common color spaces

MIT License.