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Colorbook
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Color Information

Blue

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#0D3991
RGB Values
13, 57, 145
HSL Values
220°, 84%, 31%
CMYK Values
91%, 61%, 0%, 43%

Color Variations & Tints

  • #1354D8

    Lightness: 46%

  • #114BC0

    Lightness: 41%

  • #0F42A9

    Lightness: 36%

  • #0D3991

    Lightness: 31%

    Current color

  • #0B307A

    Lightness: 26%

  • #092763

    Lightness: 21%

  • #071D4B

    Lightness: 16%

Accessibility

White Text
10.4
PASS
Black Text
2.0
FAIL
WCAG AA
PASS
WCAG AAA
PASS

Accessibility Guide

Contrast Ratios
Higher values (4.5+) ensure better readability for users with visual impairments.
WCAG AA Standard
Minimum requirement: 4.5:1 contrast for normal text, 3:1 for large text.
WCAG AAA Standard
Enhanced level: 7:1 contrast for normal text, 4.5:1 for large text.

Color Harmonies

  • Complementary

    Colors opposite on the color wheel, creating high contrast

  • Triadic

    Three evenly spaced colors forming a triangle on the color wheel

  • Analogous

    Adjacent colors on the color wheel, creating harmony and unity

Be picky and fine tune your color: colors very near to #0D3991

Systematic progression of extremely similar colors. Each color represents a precise step in lightness variation.

Current: #0D3991

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