Colorbook.io

Colorbook.io is for designers and developers who need to identify, compare, or apply colors across web, app, and print projects. Enter a color to see its HEX, RGB, HSL, HSV, and CMYK values, along with other color-space formats and copy-ready code examples for technologies such as CSS, SCSS, Swift, and Android. Explore color details including lighter and darker variations, complementary, analogous, and triadic harmonies, and WCAG contrast information to help assess text readability. Browse existing color schemes or generate combinations, save colors into palettes, and export schemes in formats including CSS, JSON, Figma, and PDF. It can help when translating color values between tools, building a palette, or checking whether foreground and background colors have sufficient contrast.

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