ColorSmith

Overview

ColorSmith is a colour picker, available on Linux.

Features described in its Flathub listing and in its GitHub repository: data import and export, keyboard shortcuts.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

At a glance

All of ColorSmith is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

About

ColorSmith is a professional color management suite designed for designers, developers, and digital artists. It delivers precision tools for color selection, accessibility testing, gradient creation, and palette management with an intuitive interface built for professional workflows. Professional Features: WCAG AA/AAA compliant contrast checker for accessible design Visual HSL gradient sliders for intuitive color adjustments Smart paste detection that automatically converts color codes between formats Enhanced color preview with hover-to-enlarge functionality Original color comparison to track color modifications Context menu operations on palette swatches for streamlined workflow Core Features: Screen color picker to capture colors from anywhere on your display Interactive HSV color plane with precision brightness adjustment slider Support for multiple color formats: HEX, RGB, RGBA, HSL, HSLA, HSV, and CMYK Transparency control with alpha channel support Random color generator for creative inspiration One-click color value copying to clipboard Customizable resizable layout with persistent panel sizing Gradient Generator: Create linear and radial gradients with unlimited stops Precise control over gradient angles (0-360°) and stop positions Live preview with fullscreen mode support Export as CSS code (with vendor prefixes and old WebKit syntax) Export as SVG files or PNG images with custom dimensions Random gradient generation Screen color picker integration for gradient stops Palette Management: Create and manage multiple custom color palettes Extract color palettes from images using K-means clustering Import and export palettes in JSON format Add optional names to palette colors for better organization Built-in standard HTML colors palette Quick add current color to any palette Right-click context menu to copy or remove colors Professional Workflow Tools: Comprehensive keyboard shortcuts (Ctrl+K to view all shortcuts) Persistent settings that remember window geometry, panel sizes, and last used color Clean, modern Qt-based interface with streamlined toolbar Quick access to project documentation and source code

Description from Flathub — AppStream (Flathub)