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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
#1B3558
RGB Values
27, 53, 88
HSL Values
214°, 53%, 23%
CMYK Values
69%, 40%, 0%, 65%

Color Variations & Tints

  • #2E5A94

    Lightness: 38%

  • #284E81

    Lightness: 33%

  • #22426D

    Lightness: 28%

  • #1B3558

    Lightness: 23%

    Current color

  • #162B46

    Lightness: 18%

  • #101F33

    Lightness: 13%

  • #0A131F

    Lightness: 8%

Accessibility

White Text
12.4
PASS
Black Text
1.7
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 #1B3558

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

Current: #1B3558

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