hsi.js is a small javascript library which converts HSI and RGB to each other.

Examples

Conversion from RGB to HSI

    hsi = toHSI(255, 0, 0); // [0, 1, 0.3333]

you can use various RGB formats.

    hsi1 = toHSI(255, 0, 0);

    hsi2 = toHSI([255, 0, 0]);
    hsi3 = toHSI('#FF0000');
    hsi4 = toHSI('#ff0000');
    hsi5 = toHSI('rgb(255,0,0)');   

    // all results will be the same. [0, 1, 0.3333]

Conversion from HSI to RGB

    rgb1 = toRGB(0, 1, 0.3333); // [255, 0, 0]
    rgb2 = toRGB([0, 1, 0.3333]); // [255, 0, 0]

    pink = toRGB(300, 1, 0.6666); // [255, 0, 255]

Other Usages

you can generate colors using HSI features.

    //generate pastel-tone color.
    pastel = toRGB(Math.floor(Math.random() * 360), 0.3, 1); 

    //generate vivid color.
    vivid = toRGB(Math.floor(Math.random() * 360), 1, 1);

Tested Environments

• Safari
• Google Chrome
• Internet Explorer 6+
• FireFox

Licences

GPL

hsi.js (HSI <-> RGB conversion javascript library) Copyright (C) 2011-2015 Jaemin Jo

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.