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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
#37216A
RGB Values
55, 33, 106
HSL Values
258°, 53%, 27%
CMYK Values
48%, 69%, 0%, 58%

Color Variations & Tints

  • #5432A4

    Lightness: 42%

  • #4A2C90

    Lightness: 37%

  • #40267D

    Lightness: 32%

  • #37216A

    Lightness: 27%

    Current color

  • #2C1A56

    Lightness: 22%

  • #221442

    Lightness: 17%

  • #180E2F

    Lightness: 12%

Accessibility

White Text
13.2
PASS
Black Text
1.6
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 #37216A

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

Current: #37216A

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