https://github.com/tei187/colortools

Handling of color based methods, such as conversion, chromatic adaptation, difference measurement.
https://github.com/tei187/colortools

chromatic-adaptation color-conversions color-distance delta-e rgb-primaries standard-illuminants

Last synced: about 1 month ago
JSON representation

Handling of color based methods, such as conversion, chromatic adaptation, difference measurement.

• Host: GitHub
• URL: https://github.com/tei187/colortools
• Owner: tei187
• Created: 2023-03-22T18:07:21.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2025-04-03T17:38:55.000Z (about 2 months ago)
• Last Synced: 2025-04-11T04:39:31.695Z (about 1 month ago)
• Topics: chromatic-adaptation, color-conversions, color-distance, delta-e, rgb-primaries, standard-illuminants
• Language: PHP
• Homepage: https://github.com/tei187/ColorTools/wiki
• Size: 239 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.MD

Awesome Lists containing this project

README

        
# COLOR TOOLS

## Description

Set of classes used to convert colors and calculate color difference.

---

## Features

* ### Model conversion:

  - xy,

  - xyY,

  - XYZ,

  - L\*ab,

  - L\*uv,

  - L\*CH.

  - L\*CH UV.

  - HSV,

  - HSL,

  - RGB for primaries \*:

    - Adobe 1998 RGB,

    - Apple RGB,

    - Best RGB,

    - Beta RGB,

    - Bruce RGB,

    - CIE RGB,

    - ColorMatch RGB,

    - Don RGB 4,

    - ECI RGB v2,

    - Ekta Space PS5,

    - NTSC RGB,

    - PAL/SECAM RGB,

    - ProPhoto RGB,

    - Radiance RGB,

    - Rec.709,

    - SMPTE-C RGB,

    - sRGB,

    - WideGamutRGB.

  ---

  \* custom-defined primaries also supported.

* ### Chromatic adaptation transformations matrices:

  - Bradford,

  - CIECAT02,

  - CMCCAT2000,

  - Sharp.

  - Von Kries,

  - XYZ Scaling,

* ### White point dictionary of standard illuminants:

  *(2° and 10° standard observer)*

  - A,

  - B,

  - C,

  - D50, D55, D65, D75, D93,

  - E,

  - F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,

  - LED_B1, LED_B2, LED_B3, LED_B4, LED_B5, LED_BH1, LED_RGB1, LED_V1, LED_V2.

* ### DeltaE difference:

  Check color distance in various algorithms:

  - CIE76,

  - CIE94,

  - CIE00 (CIEDE2000),

  - CMC l:c.

* ### Contrast ratio calculation.

## Sources

* [**Bruce Lindbloom** @ brucelindbloom.com](http://www.brucelindbloom.com/)

* [**Color topics for programmers** @ CodeProject.com](https://www.codeproject.com/Articles/1202772/Color-Topics-for-Programmers#CIE_XYZ)

* [**The CIEDE2000 Color-Difference Formula**: Implementation Notes, Supplementary Test Data, and Mathematical Observations | *Gaurav Sharma, Wencheng Wu, Edul N. Dalal* @ rochester.edu](https://hajim.rochester.edu/ece/sites/gsharma/ciede2000/ciede2000noteCRNA.pdf)

* [**The RGB-XYZ Matrix Calculator** @ russellcottrell.com](https://www.russellcottrell.com/photo/matrixCalculator.htm)

* [**Calculate color temperature (CCT) from CIE 1931 xy coordinates** @ waveformlighting.com](https://www.waveformlighting.com/tech/calculate-color-temperature-cct-from-cie-1931-xy-coordinates)

* [**had to know...** Technology Articles @ had2know.org](https://www.had2know.org/technology.html)

* [**Standard Illuminants** - White points of standard illuminants @ Wikipedia.org](https://en.wikipedia.org/wiki/Standard_illuminant#White_points_of_standard_illuminants)

* [**LMS color space** @ wikipedia.org](https://en.wikipedia.org/wiki/LMS_color_space)

## Requirements

PHP 8.1