ColorBox vs ColorKit

ColorBox is a free web tool and extension for creating color systems and accessible palettes. You can adjust multiple colors in one tab and share a system as a URL or JSON file. Contrast indicators show 3:1, 4.5:1, and 7:1 levels for color sets, while HSV and OKLCH provide color-space modes. Auto Dark Mode creates an inverted set from original inputs; duplicated sets can also be edited manually. Hue progression rotates clockwise or counterclockwise. Export options include Config, Output, Tailwind, CSS, OKLCH, and Swift. The maker describes importing systems into Figma through a plugin and JSON, with custom step names and generated Paint Styles. A Sketch route uses that Figma workflow, then SVG export. The color algorithm can be consumed through NPM with exported JSON for code generation. Custom curves were described as unavailable in ColorBox at the cited time. The free plan is ad-free.

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.