ColorPalette Pro vs iWantHue

ColorPalette Pro is a web app for generating customizable color palettes from a base color. It creates analogous, complementary, split complementary, triadic, tetradic, and tint-and-shade palettes, with square, triangle, circle, and diamond variations for each type. Colors can be entered as text, adjusted with sliders, selected with an eyedropper, recalled from history, chosen at random, or supplied through a URL. Supported color spaces include OKLCH, LAB, LCH, HSL, and RGB. UI mode generates interface palettes with surface and on-surface colors, including light and dark versions. Palette values can be copied as CSS, saved as a CSS file, or rendered as an image; a URL can preserve the chosen color and most options for sharing. Palette images can be dragged into Figma for sampling. The app matches color names through an API using hex values and uses Color.js for color-science functions. It is open source under the MIT license, and its maker says there are no plans for ads or subscriptions. The eyedropper is unavailable in Firefox and mobile browsers.

iWantHue generates and refines color palettes for data scientists working with data visualization. Users can set hue, chroma, and lightness constraints, then sort colors by difference, hue, chroma, lightness, or randomly. Its calculations use CIE Lab, with HCL controls, and palette distribution uses either k-means clustering or force-vector repulsion. An option helps improve palettes for colorblind users. The web interface exports HEX, RGB, HCL, and LAB JSON, CSS color lists, and JavaScript settings. Developers can install the JavaScript package with npm for Node.js or browser use; its generator accepts a seed to reproduce a palette from a data attribute. The npm module also includes precomputed palettes from 2 to 15 colors, including colorblind alternatives. Very large palettes may include similar colors when the selected color space is constrained, though the first colors are arranged for the greatest possible distinction. The Fancy preset is limited to generic palettes of up to 10 colors. iWantHue is free.