Ultramarine

#1b00a6

Color Harmonies

Mathematical Matches
Monochromatic
#340dff#2300d9#1b00a6#130073#0a0040
Analogous
#0037a6#1c00a6#6f00a6
Complementary
#1c00a6#8aa600
Split-Complementary
#1c00a6#a66f00#37a600
Triadic
#1c00a6#a61c00#00a61c
Tetradic (Double Complementary)
#1c00a6#a60037#8aa600#00a66f

Readability & Contrast

Accessibility Audit & WCAG Compliance

Use Case: Standard White Text

White Text

AAA PASS
The Future
is Color.
Contrast Ratio13.14:1
Use Case: Standard Black Text

Black Text

FAIL
The Future
is Color.
Contrast Ratio1.59:1
Optimized AAA Text

Suggested Text

AAA PASS
The Future
is Color.
Contrast Ratio7.08:1
Recommended Monochrome
#c1b5ff
Optimized AAA Background

Suggested Background

AAA PASS
The Future
is Color.
Contrast Ratio7.31:1
Suggested Complement
#accf00

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-[#1b00a6] text-white">
  <!-- Your Content -->
</div>

tailwind.config.js

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        'brand': '#1b00a6',
      }
    }
  }
}