117 lines
2.8 KiB
Markdown
117 lines
2.8 KiB
Markdown
# color-converter
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A robust CLI color conversion utility written in Python.
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# Features
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- Supports conversions between hexcode, RGB, CMY, CMYK, HSL, and HSV
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- Lenient automatic input detection
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- Bulk conversions to and from files
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# Usage
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Simply supply one or more colors in any of the supported formats as a string, and it will perform all supported conversions.
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```
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$ python color-converter.py "#85feab"
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#85feab
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rgb(133, 254, 171)
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cmy(47.84, 0.39, 32.94)
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cmyk(47.64, 0.00, 32.68, 0.39)
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hsl(138.84, 98.37, 75.88)
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hsv(138.84, 47.64, 99.61)
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```
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You can also use flags to limit the output:
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```
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$ python color-converter.py -rgb "#abc123" "#def456"
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rgb(171, 193, 35)
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rgb(222, 244, 86)
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```
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---
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It can also function as a color translation utility for converting colors in bulk.
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For example, you could take a file that has color codes in various formats and have them all converted to a single format.
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To do what was just described, use this command:
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```
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$ python color-converter -cmyk -i "input_file" -o "output_file"
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```
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where the input file contains:
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```
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rgb(1, 2, 3)
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#123456
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HSV(1, 2, 3)
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```
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and the output file gets populated with:
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```
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cmyk(66.67%, 33.33%, 0%, 98.82%)
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cmyk(79.07%, 39.53%, 0%, 66.27%)
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cmyk(0%, 1.97%, 2%, 97%)
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```
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_Note: include the `-a` flag to append to the specified output file, rather than overwriting it._
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---
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The program attempts to determine what color format you're inputting, and will succeed as long as the format is indicated at some point in the input string.
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For example, these are all valid strings to input 100, 200, and 300 as RGB values:
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```
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"rgb(100, 200, 300)"
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" RGB: 100 200 300"
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"rGb-100 . 200^300"
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```
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_Note: Hexcodes will require a '#' in order to be automatically recognized._
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While the program will always try to auto-detect the input format, If you only have raw number values, you can specify a fallback format with flags.
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For example:
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```
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$ python color-converter.py -rgb -isCmyk "1 2 3 4"
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rgb(242, 240, 237)
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```
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(Don't forget to use the `-h` or `--help` flags for in-terminal help)
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# Project Background
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I started this project because I found myself converting between Hex and RGB a lot while ricing. As I was frequently visiting various color picker websites, I began thinking more and more about how color conversions even work in the first place.
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Using any random color-picker online to go from RBG->Hex (and vice versa) works plenty fine, but I think CLI tools are cool, and I couldn't find any CLI color conversion utilities.
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# Conversion Sources
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Hex<->RGB:
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https://en.wikipedia.org/wiki/Web_colors
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RGB<->CMYK:
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https://www.101computing.net/cmyk-to-rgb-conversion-algorithm/
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https://thecolorsmeaning.com/rgb-to-cmyk/
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RGB<->CMY:
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http://colormine.org/convert/rgb-to-cmy
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RGB<->HSL:
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https://www.baeldung.com/cs/convert-color-hsl-rgb
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https://en.wikipedia.org/wiki/HSL_and_HSV#HSV_to_RGB
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