color_models

A Dart & Flutter package for defining color constants and converting them between color spaces.

For use with Flutter, see: https://pub.dev/packages/flutter_color_models

Usage

import 'package:color_models/color_models.dart';

Color Spaces

color_models exposes models for the CMYK, HSI, HSL, HSP, HSV, LAB, RGB, and XYZ color spaces; represented as CmykColor, HsiColor, HslColor, HspColor, HsvColor, LabColor, RgbColor, and XyzColor respectively.

Each model is constant and extends ColorModel.

Converting Colors Between Spaces

Each color model has methods to convert itself to every other color model.

CmykColor toCmykColor();

HsiColor toHsiColor();

HslColor toHslColor();

HspColor toHspColor();

HsvColor toHsvColor();

LabColor toLabColor();

RgbColor toRgbColor();

XyzColor toXyzColor();

Altenatively, each color model has a static method from that returns a color from any color space in the color space being called.

static T from(ColorModel color);
// Create a HSV color
var originalColor = HsvColor(0.3, 0.8, 0.7);

// Convert it to RGB => RgbColor(64, 179, 36)
var rgbColor = RgbColor.from(originalColor);

// Then to CMYK => CmykColor(64.25, 0, 79.89, 29.8)
var cmykColor = CmykColor.from(rgbColor);

// Back to HSV => HsvColor(0.3, 0.8, 0.7)
var hsvColor = HsvColor.from(cmykColor);

Note: All color conversions use the RGB color space as an intermediary. To minimize the loss of precision when converting between other color spaces, RgbColor privately stores the RGB values as nums rather than ints. The num values can be returned as a list with RgbColor's toPreciseList() method.

Libraries

color_models