catkin
Human Perceivable Color Manager
Catkin helps you manage color using the HSLuv color scale, a human-friendly alternative to HSL https://www.hsluv.org/
Usage
catkin is a command-line program that reads a list of hexadecimal (or rgb) colors and smartly transforms their luminosity or saturation.
See colors.txt for data file example.
catkin -s 10 colors.txt # set HSLuv saturation to 10 catkin -l 10 colors.txt # set HSLuv luminosity to 10 catkin -saturation 10 colors.txt # set HSLuv saturation to 10 catkin -luminosity 10 colors.txt # set HSLuv luminosity to 10 Visual Example (before and after)
Using catkin to set saturation to 30% for all coloes in colors.txt
cat colors.txt #0d6efd #6610f2 #6f42c1 #d63384 #dc3545 #fd7e14 #ffc107 #28a745 #20c997 #17a2b8 cat colors.txt | catkin -s 30 #66739f #554881 #64538e #a1607a #ab5c61 #c69582 #ddc7a5 #749979 #92b9a8 #7b979f 