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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
#37578C
RGB Values
55, 87, 140
HSL Values
217°, 44%, 38%
CMYK Values
61%, 38%, 0%, 45%

Color Variations & Tints

  • #527BBC

    Lightness: 53%

  • #456EB0

    Lightness: 48%

  • #3D629E

    Lightness: 43%

  • #37578C

    Lightness: 38%

    Current color

  • #2F4C79

    Lightness: 33%

  • #284067

    Lightness: 28%

  • #213554

    Lightness: 23%

Accessibility

White Text
7.2
PASS
Black Text
2.9
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 #37578C

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

Current: #37578C

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