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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
#1D338B
RGB Values
29, 51, 139
HSL Values
228°, 65%, 33%
CMYK Values
79%, 63%, 0%, 45%

Color Variations & Tints

  • #2B4BCA

    Lightness: 48%

  • #2643B5

    Lightness: 43%

  • #223BA0

    Lightness: 38%

  • #1D338B

    Lightness: 33%

    Current color

  • #192C76

    Lightness: 28%

  • #152461

    Lightness: 23%

  • #101C4C

    Lightness: 18%

Accessibility

White Text
11.1
PASS
Black Text
1.9
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 #1D338B

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

Current: #1D338B

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