AIColors vs ColorUI Prompt Palette Studio

AIColors is a web-based color palette generator and set of color tools. Describe a mood, theme, or style to generate a harmonious palette of five colors, then copy a single hex code or the whole palette. The tools directory also includes color contrast checking, conversion, harmony and gradient generation, image color extraction, and palette visualization. Its contrast checker compares pairs against WCAG 2.2 and APCA, with live previews, OKLCH-based suggestions, and color blindness simulation. The converter provides copy-ready snippets for CSS, Tailwind, Swift, Android, and Flutter. Image extraction uses k-means clustering in OKLab, and images stay in the browser. The privacy policy says palette prompts, color values, uploaded images, and generated palettes are not stored by an AIColors account system, and most color work runs locally in the browser. The generator is available in nine languages. There is no public API for the homepage generator. AIColors is free, with no account required for unlimited palette generation. Users are responsible for reviewing outputs in their product, legal, brand, and accessibility context.

ColorUI Prompt Palette Studio turns natural-language design requests into color palettes and explains each color's role. It maps mood, temperature and context to OKLCH properties, arranging colors as primary brand tones, secondary accents and neutral backgrounds. You can give it color names or exact hex codes, lock those choices and generate matching tones around them. Exports include CSS custom properties, W3C design tokens and Tailwind themes, alongside SCSS, JSON, Style Dictionary, Swift UIColor and Android XML. The public API needs no signup or API key, supports CORS and allows 60 requests per minute; it accepts prompt-based generation, harmony rules or random mode, with random counts from 2 to 8. Prompts are evaluated statelessly and are not stored or tied to personal accounts. Palettes may be used personally or commercially without attribution. Integrations include Figma, VS Code, CLI, GitHub, Raycast and MCP. ColorUI also lists image color extraction, an accessibility checker and seven harmony modes. The free plan is available without signup.