ColorKit vs Gpick

ColorKit is a free web toolkit for designers and artists working with color palettes, gradients, and other design elements. Its palette generator offers AI prompts, style modes, color locking, and controls for hue, brightness, saturation, and temperature. Palettes can be exported as PNG, copied as CSV or an array, or shared by URL. The image palette tool extracts 2 to 10 colors, allows manual adjustment of color points, and can create a PNG collage; ColorKit says images used by this tool are never uploaded to its server. The gradient maker supports linear, radial, and conic gradients, adjustable color stops, AI generation, CSS copying, and image or code export, with up to eight stops per gradient. A contrast checker calculates text and background contrast ratios and can pick colors from an uploaded image or image URL. Other listed tools include a color picker, shade generator, SVG color changer, background maker, and color mixer. ColorKit is available on the web. Image palette extraction needs no signup; a free account is required to save palettes and gradients.

Gpick is a free, open-source color picker and palette editor for Linux. It samples colors from the desktop, with magnification and keyboard control of the pointer, and can assign names to colors automatically. Palette tools let users build palettes from images, generate schemes, mix colors, adjust lightness or saturation, and create harmonious colors. For noisy or patterned sources, oversampling averages multiple pixel values using five falloff types. Gpick imports and exports Inkscape/GIMP palettes and Adobe Swatch Exchange files; export options also include MTL, CSS, HTML, and customizable text files. HTML exports can be shared as palette previews with people who do not use palette software. A floating mode provides a pointer-following window and notification-area icon for basic picking, but excludes palette editing and color adjustment. Command-line arguments let other programs and scripts use Gpick. Downloads include Debian and Ubuntu packages for amd64 and source archives. The project repository identifies its license as BSD-3-Clause.