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Colorbook
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Color Information

Black

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

HEX Format
#373C58
RGB Values
55, 60, 88
HSL Values
231°, 23%, 28%
CMYK Values
38%, 32%, 0%, 65%

Color Variations & Tints

  • #545C87

    Lightness: 43%

  • #4B5177

    Lightness: 38%

  • #414768

    Lightness: 33%

  • #373C58

    Lightness: 28%

    Current color

  • #2D3148

    Lightness: 23%

  • #232738

    Lightness: 18%

  • #1A1C29

    Lightness: 13%

Accessibility

White Text
10.8
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 #373C58

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

Current: #373C58

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