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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
#121CCC
RGB Values
18, 28, 204
HSL Values
237°, 84%, 44%
CMYK Values
91%, 86%, 0%, 20%

Color Variations & Tints

  • #3F47EE

    Lightness: 59%

  • #2731EC

    Lightness: 54%

  • #141EE6

    Lightness: 49%

  • #121CCC

    Lightness: 44%

    Current color

  • #1018B7

    Lightness: 39%

  • #0E15A0

    Lightness: 34%

  • #0C1288

    Lightness: 29%

Accessibility

White Text
10.2
PASS
Black Text
2.1
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 #121CCC

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

Current: #121CCC

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