Cruip - Landing page templates for startups
Site Palette - Get the essential colours from any website
Launchaco 2.0 🦄 - Simple landing pages for your startup
Color Palette Generator - Enter the URL of an image and find its color palette
Carrd - Simple, responsive one-page site creator.
Colour Contrast Analyser - TPGi's ADA Color Contrast Checker checks for helps determine the accessibility the contrast ratio of two colors for WCAG AA and AAA.