ShadowToolkit

Color Picker & Converter

Pick colors, convert HEX/RGB/HSL, and test WCAG accessibility contrast.

100% In-Browser
100% In-Browser PrivacyLocal

Your files and data are processed locally and never leave your device.

Color Selector & Inspector

#3B82F6
Tints & Shades

Color Formats & CSS Values

HEX#3B82F6
RGBrgb(59, 130, 246)
HSLhsl(217, 91%, 60%)
CSS RGBArgba(59, 130, 246, 1.0)
Contrast vs White:3.68:1

What is Color Picker & Converter?

Color Picker & Converter provides an interactive visual color palette canvas to explore shades, tints, and color harmonies. It converts color codes in real time across HEX, RGB, RGBA, HSL, HSLA, HSV, and CMYK color spaces with 1-click CSS code copying.

Zero-Server Client-Side Guarantee

Unlike legacy online utilities that upload sensitive media and documents to remote cloud storage, Shadow Toolkit executes this entire operation directly within your browser's local runtime. Your raw data never crosses the network.

Key Capabilities

  • Visual 2D gradient spectrum with hue slider and alpha opacity controls
  • Real-time bidirectional conversion across HEX, RGB, HSL, HSV, and CMYK
  • Harmonious color palette generation: Complementary, Monochromatic, Triadic, Analogous
  • 1-Click 'Copy CSS' button for web designers and frontend developers
  • 100% private in-browser tool

Common Use Cases

1Selecting and harmonizing brand accent colors for web design and UI design systems
2Translating digital RGB/HEX screen colors into CMYK equivalents for print marketing materials
3Adjusting alpha transparency percentages for CSS background-color declarations
4Creating consistent, accessible UI components and modern aesthetic design tokens for digital products

How to use Color Picker & Converter

01

Select or Paste Color

Click anywhere on the spectrum or paste any HEX/RGB string.

02

Fine-Tune Hue & Alpha

Adjust the hue slider and opacity bar to dial in the shade.

03

Copy Format

Click on HEX, RGB, or HSL to copy the formatted string.

04

Copy CSS or Export Assets

Copy the generated production-ready CSS snippet, Tailwind classes, or SVG assets directly into your design system.

Frequently Asked Questions

RGB describes colors in terms of Red, Green, and Blue light channels (0-255). HSL describes colors intuitively by Hue (0-360 degrees), Saturation (0-100%), and Lightness (0-100%).

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