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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
#308CC5
RGB Values
48, 140, 197
HSL Values
203°, 61%, 48%
CMYK Values
76%, 29%, 0%, 23%

Color Variations & Tints

  • #67AEDA

    Lightness: 63%

  • #53A3D5

    Lightness: 58%

  • #3E98D0

    Lightness: 53%

  • #308CC5

    Lightness: 48%

    Current color

  • #2B7DB1

    Lightness: 43%

  • #266F9C

    Lightness: 38%

  • #216087

    Lightness: 33%

Accessibility

White Text
3.7
FAIL
Black Text
5.7
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 #308CC5

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

Current: #308CC5

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