colortools-lentolen 0.0.5

A package to do color conversions and comparisons

colortools

Python package for common color conversions and operations

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Table of Contents

• Description
• Features
• Quickstart
• Documentation
• License

Description

Python package for conversions between common color representations like RGB and HEX and color comparisons using CIE formulas.

Features

Conversion between common color representations

• RGB
• HEX
• CMYK
• HSL
• HSV
• LAB
• XYZ
• Color Name

Color difference calculation (Delta E)

measure of the perceptual difference between two colors

• Delta E (ΔE) CIE76 Formula
• Delta E (ΔE) CIE94 Formula
• Delta E (ΔE) CIEDE2000 Formula

Quickstart

Installation

To install from PyPI with pip:

$ python -m pip install colortools-lentolen

Example usage:

Using colortools in a Python script to calculate the CIEDE200 difference between two hex colors.

from colortools import color_utils
color1 = color_utils.hex_to_rgb("#ddf4ee")
color2 = color_utils.hex_to_rgb("#88bfb1")
deltaE = color_utils.ciede2000_rgb(color1, color2)

Documentation

all color models are represented as tuples except hex codes: e.g: (255,255,255)

color conversion:

syntax example:

colortools.color_utils.hex_to_rgb(hex)

supported color models: rgb, hex, cmyk, hsl, hsv, lab, xyz, colorname

There are multiple color naming standards availabe: html (standard), html-ger, meodai, x11, color-meanings.com.

This is how you can for example use the meodai GitHub color name collection:

colortools.color_utils.hex_to_colorname("#ffffff", "meodai")

color difference:

CIE functions to calculate the Delta E difference between to colors (perceptual difference).

• ciede2000(lab1, lab2)
• ciede2000_rgb(rgb1, rgb2)
• cie76(lab1, lab2)
• cie76_rgb(rgb1, rgb2)
• cie94(lab1, lab2)
• cie94_rgb(rgb1, rgb2)

returns Delta E as float

License

colortools is distributed under the terms of the MIT license.