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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
#155CC7
RGB Values
21, 92, 199
HSL Values
216°, 81%, 43%
CMYK Values
89%, 54%, 0%, 22%

Color Variations & Tints

  • #3D83EB

    Lightness: 58%

  • #2674E8

    Lightness: 53%

  • #1767DE

    Lightness: 48%

  • #155CC7

    Lightness: 43%

    Current color

  • #1251AF

    Lightness: 38%

  • #104798

    Lightness: 33%

  • #0E3C81

    Lightness: 28%

Accessibility

White Text
6.2
PASS
Black Text
3.4
FAIL
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 #155CC7

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

Current: #155CC7

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