Linux Softwares to Built-in Color picker

Flameshot is a powerful yet lightweight, open-source screenshot tool available across multiple Linux distributions. It offers a built-in editor with a variety of annotation tools, direct image uploading to Imgur, and extensive customization options to streamline your screenshot workflow.

GIMP (GNU Image Manipulation Program) is a powerful, free, and open-source raster graphics editor used for image manipulation, retouching, composition, and authoring. It supports a vast array of file formats and provides sophisticated tools comparable to commercial alternatives, making it a versatile choice for photographers, designers, and artists.

Agave is a lightweight, open-source color scheme generator for designers and developers, offering tools to create, manage, and extract color palettes from various sources, particularly images.

gcolor2 is a minimalist and lightweight color selector tool for Linux, providing a simple interface to pick colors from the desktop or predefined palettes and generate various color codes.

File & Image Uploader by Z-O-O-M.eu is a versatile and portable tool designed to simplify uploading files and images to a variety of cloud storage services. It supports multiple hosts simultaneously and offers features like bulk uploads, mirror creation, and built-in tools for screenshots and color picking.