How to install Pastel Color Tool on Ubuntu
Pastel is a free and open source command-line color tool for Linux. Using this you can manipulate colors, generate colors, analyze colors in your terminal and convert colors from one format to another. Some of the main features are many different color formats support and it also supports color spaces like RGB (sRGB), HSL, CIELAB, CIELCh as well as ANSI 8-bit and 24-bit. It is released under Apache License, Version 2.0 license.