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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
#243DA0
RGB Values
36, 61, 160
HSL Values
228°, 63%, 38%
CMYK Values
78%, 62%, 0%, 37%

Color Variations & Tints

  • #3C5AD3

    Lightness: 53%

  • #2D4CC8

    Lightness: 48%

  • #2944B3

    Lightness: 43%

  • #243DA0

    Lightness: 38%

    Current color

  • #1F3489

    Lightness: 33%

  • #1A2C74

    Lightness: 28%

  • #162460

    Lightness: 23%

Accessibility

White Text
9.3
PASS
Black Text
2.3
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 #243DA0

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

Current: #243DA0

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