Colorfor.ai vs ColorUI Prompt Palette Studio

Colorfor.ai is a color workspace for making palettes, building interface themes, checking contrast, previewing designs, and exporting color tokens. Its AI Studio turns a written brief into Safe, Expressive, and Distinctive directions; a deterministic engine computes and verifies the colors. The theme builder creates 40 semantic UI roles from up to three brand colors, with light and dark modes. Contrast & Vision checks WCAG 2.2 ratios and includes seven color-vision simulations. Export formats include CSS variables, Tailwind, shadcn, SCSS, design tokens, SVG, PNG, and JSON. The service also offers a keyless REST API, an MCP server for AI agents, and embeddable SVG palette badges. Palettes and settings stay in browser local storage, while image uploads are processed on-device. AI Studio sends brief text to its provider through OpenRouter only after explicit opt-in; palettes and images are not sent. Site Recolour sends a submitted public page address for rendering, and its screenshots are cached for about 24 hours. The free plan covers tools, API, MCP server, widgets, and exports, subject to fair-use limits. The public API allows 120 requests per minute per IP.

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.