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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
#173773
RGB Values
23, 55, 115
HSL Values
219°, 67%, 27%
CMYK Values
80%, 52%, 0%, 55%

Color Variations & Tints

  • #2356B3

    Lightness: 42%

  • #1F4B9E

    Lightness: 37%

  • #1B4188

    Lightness: 32%

  • #173773

    Lightness: 27%

    Current color

  • #132D5E

    Lightness: 22%

  • #0E2348

    Lightness: 17%

  • #0A1833

    Lightness: 12%

Accessibility

White Text
11.5
PASS
Black Text
1.8
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 #173773

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

Current: #173773

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