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    color-blind

    0.1.1 • Public • Published

    color-blind

    NPM version Build Status Code Climate Coverage Status Dependency Status devDependency Status

    NPM

    Description

    Simulate color blindness by converting RGB hex codes. This is a node.js port of the daltonize code by mudcu.be. See Links for more information.

    Getting Started

    Install the module with: npm install color-blind

    var blinder = require('color-blind');
    blinder.protanopia('#42dead'); // result: "#d1c4a0"

    Color Blindness Table

    Group
    Trichromat
    3 good cones
    Normal
    Anomalous Trichromat
    2 good cones, 1 bad
    Protanomaly
    low red
    Deuteranomaly
    low green
    Tritanomaly
    low blue
    Dichromat
    2 good cones, 1 blind
    Protanopia
    no red
    Deuteranopia
    no green
    Tritanopia
    no blue
    Monochromat
    1 good cone, 2 blind/bad
    Achromatomaly
    almost no color
    Achromatopsia
    no color

    Documentation

    All the exported functions accept 2 parameters:

    • colorString - any valid CSS color string
    • returnRgb optional
      • if true, then an object containing RGB values is returned
      • if false or not passed, then a hex string is returned

    blinder.protanomaly(colorString, returnRgb)

    Part of the "Anomalous Trichromat" family of color blindness. The viewer sees low amounts of red.

    Examples:

    blinder.protanomaly("#42dead");
    // result: "#9dcea5"
    blinder.protanomaly("#42dead", false);
    // result: "#9dcea5"
    blinder.protanomaly("#42dead", true);
    // result: {"R":156.81027381701807,"G":205.52274401697787,"B":164.8656701007824}

    blinder.protanopia(colorString, returnRgb)

    Part of the "Dichromat" family of color blindness. The viewer sees no red.

    Examples:

    blinder.protanopia("#42dead");
    // result: "#d1c4a0"
    blinder.protanopia("#42dead", false);
    // result: "#d1c4a0"
    blinder.protanopia("#42dead", true);
    // result: {"R":208.70185885531413,"G":196.10716916953663,"B":160.21748158694382}

    blinder.deuteranomaly(colorString, returnRgb)

    Part of the "Anomalous Trichromat" family of color blindness. The viewer sees low amounts of green.

    Examples:

    blinder.deuteranomaly("#42dead");
    // result: "#a5c9b3"
    blinder.deuteranomaly("#42dead", false);
    // result: "#a5c9b3"
    blinder.deuteranomaly("#42dead", true);
    // result: {"R":165.29136650372695,"G":201.41446893677266,"B":178.9125102904318}

    blinder.deuteranopia(colorString, returnRgb)

    Part of the "Dichromat" family of color blindness. The viewer sees no green.

    Examples:

    blinder.deuteranopia("#42dead");
    // result: "#debeb6"
    blinder.deuteranopia("#42dead", false);
    // result: "#debeb6"
    blinder.deuteranopia("#42dead", true);
    // result: {"R":222.02929022014237,"G":189.6513083292142,"B":182.29108759925}

    blinder.tritanomaly(colorString, returnRgb)

    Part of the "Anomalous Trichromat" family of color blindness. The viewer sees low amounts of blue.

    Examples:

    blinder.tritanomaly("#42dead");
    // result: "#56d8d1"
    blinder.tritanomaly("#42dead", false);
    // result: "#56d8d1"
    blinder.tritanomaly("#42dead", true);
    // result: {"R":86.14054005420464,"G":216.21898840123637,"B":209.23279525212993}

    blinder.tritanopia(colorString, returnRgb)

    Part of the "Dichromat" family of color blindness. The viewer sees no blue.

    Examples:

    blinder.tritanopia("#42dead");
    // result: "#62d5e6"
    blinder.tritanopia("#42dead", false);
    // result: "#62d5e6"
    blinder.tritanopia("#42dead", true);
    // result: {"R":97.64942008517872,"G":212.91555320194286,"B":229.93724968191844}

    blinder.achromatomaly(colorString, returnRgb)

    Part of the "Monochromat" family of color blindness. The viewer sees the absence of most color.

    Examples:

    blinder.achromatomaly("#42dead");
    // result: "#8ec7b5"
    blinder.achromatomaly("#42dead", false);
    // result: "#8ec7b5"
    blinder.achromatomaly("#42dead", true);
    // result: {"R":141.91089545454545,"G":198.63816818181814,"B":180.81998636363636}

    blinder.achromatopsia(colorString, returnRgb)

    Part of the "Monochromat" family of color blindness. The viewer sees no color at all.

    Examples:

    blinder.achromatopsia("#42dead");
    // result: "#b9b9b9"
    blinder.achromatopsia("#42dead", false);
    // result: "#b9b9b9"
    blinder.achromatopsia("#42dead", true);
    // result: {"R":185.28855,"G":185.28855,"B":185.28855}

    Links

    Release History

    v0.1.0 - Released June 21, 2014

    • initial release

    License

    Copyright (c) 2014 skratchdot
    Licensed under the MIT license.

    Install

    npm i color-blind

    DownloadsWeekly Downloads

    118

    Version

    0.1.1

    License

    none

    Last publish

    Collaborators

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