Colora vs ColorBox

Colora is a free Windows color converter and screen picker for selecting and saving colors. The screen picker includes zoom for more precise selection, and the converter handles RGB, HEX, HSB, HSL and CMYK. You can create custom palettes, save them for later and export them to GIMP; an automatic history also retains recently picked colors. Window controls let Colora stay on top of other windows or use a minimal size mode. It requires Windows 7 or newer and .NET Framework 4.6 or higher. The maker says the picker has been tested with Windows 10 and DPI scaling. Downloads are offered through SourceForge, with installation also available through Chocolatey. Colora is published by Bluegrams under the BSD 3-Clause license. SourceForge lists version 0.3.1, dated September 11, 2020, as the latest release.

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.