100% Free Online Tool

Color Hex Color Codes & Palette Generator

OmniTools Color Hex Color Codes is a comprehensive color studio for web designers, frontend developers, and digital artists. Easily inspect hex color codes, adjust RGB and HSL sliders, convert between digital color models, generate harmonious color palettes (Complementary, Triadic, Analogous), and check WCAG 2.1 accessibility contrast.

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How to Use Color Hex Color Codes

Step 1
Pick or Enter Color
Use the visual color picker, enter any HEX code (e.g. #4F46E5), or click 'Random Color'.
Step 2
Fine-Tune Values
Adjust RGB (0-255) and HSL (Hue, Saturation, Lightness) sliders for precise color calibration.
Step 3
Inspect Palettes & WCAG
View monochromatic shades, tints, color harmonies, and verify text readability contrast ratios.
Step 4
Copy Code Snippets
Click to copy HEX, RGB, HSL, CMYK, CSS properties, or Tailwind CSS background classes.

Key Features

  • Complete Color Formats: Instant bidirectional conversion for HEX, RGB, RGBA, HSL, HSV/HSB, and print CMYK.
  • WCAG 2.1 Contrast Testing: Live verification of AA and AAA compliance for normal and large text against light and dark backgrounds.
  • Harmonies & Monochromatic Scales: Automatically generates complementary, analogous, triadic, tetradic, tints, and shades.
  • HTML Color Names & Curated Palettes: Searchable database of W3C standard HTML color names and trending aesthetic palettes.

Frequently Asked Questions

What is a HEX color code?

A hexadecimal color code is a six-digit code preceded by a hash symbol (#) representing the red, green, and blue components of a color from 00 to FF (e.g., #FFFFFF for white, #000000 for black).

What is the difference between HEX and RGB?

HEX and RGB express the exact same color values: RGB uses decimal numbers from 0 to 255 (e.g., rgb(255, 0, 0)), while HEX encodes those same numbers in base-16 hexadecimal (#FF0000).

How do I check if my colors meet accessibility standards?

Our live WCAG test displays the exact contrast ratio. Web Content Accessibility Guidelines (WCAG 2.1) require at least 4.5:1 for normal body text and 3:1 for large text (AA compliance).

Can I use these colors in Tailwind CSS and CSS variables?

Yes! Every color includes one-click copy buttons for arbitrary Tailwind classes like bg-[#4f46e5] as well as standard CSS properties.