Ultramarine

#201fb3

Color Harmonies

Mathematical Matches
Monochromatic
#5756e2#2c2bda#201fb3#181788#10105c
Analogous
#1f69b3#1f1fb3#691fb3
Complementary
#1f1fb3#b3b31f
Split-Complementary
#1f1fb3#b3691f#69b31f
Triadic
#1f1fb3#b31f1f#1fb31f
Tetradic (Double Complementary)
#1f1fb3#b31f69#b3b31f#1fb369

Readability & Contrast

Accessibility Audit & WCAG Compliance

Use Case: Standard White Text

White Text

AAA PASS
The Future
is Color.
Contrast Ratio11.00:1
Use Case: Standard Black Text

Black Text

FAIL
The Future
is Color.
Contrast Ratio1.90:1
Optimized AAA Text

Suggested Text

AAA PASS
The Future
is Color.
Contrast Ratio7.12:1
Recommended Monochrome
#ccccfb
Optimized AAA Background

Suggested Background

AAA PASS
The Future
is Color.
Contrast Ratio7.06:1
Suggested Complement
#d6d611

Vision Deficiency Simulations

Protanopia

Red Blind

Deuteranopia

Green Blind

Tritanopia

Blue Blind

Achromatopsia

Total Color Blind

Developer Tools

Ready-to-use snippets for your codebase.

Closest Standard Class

bg-indigo-800Approx

Arbitrary Value (JIT)

<div class="bg-[#201fb3] text-white">
  <!-- Your Content -->
</div>

tailwind.config.js

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'brand': '#201fb3',
      }
    }
  }
}