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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
#171C69
RGB Values
23, 28, 105
HSL Values
236°, 64%, 25%
CMYK Values
78%, 73%, 0%, 59%

Color Variations & Tints

  • #252DA7

    Lightness: 40%

  • #202892

    Lightness: 35%

  • #1C227D

    Lightness: 30%

  • #171C69

    Lightness: 25%

    Current color

  • #121754

    Lightness: 20%

  • #0E113F

    Lightness: 15%

  • #090B2A

    Lightness: 10%

Accessibility

White Text
14.9
PASS
Black Text
1.4
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 #171C69

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

Current: #171C69

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