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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
#237DB8
RGB Values
35, 125, 184
HSL Values
204°, 68%, 43%
CMYK Values
81%, 32%, 0%, 28%

Color Variations & Tints

  • #4BA2DD

    Lightness: 58%

  • #3697D9

    Lightness: 53%

  • #278BCE

    Lightness: 48%

  • #237DB8

    Lightness: 43%

    Current color

  • #1F6EA3

    Lightness: 38%

  • #1B608D

    Lightness: 33%

  • #175178

    Lightness: 28%

Accessibility

White Text
4.5
FAIL
Black Text
4.7
PASS
WCAG AA
PASS
WCAG AAA
FAIL

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 #237DB8

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

Current: #237DB8

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