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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
#1B81C0
RGB Values
27, 129, 192
HSL Values
203°, 75%, 43%
CMYK Values
86%, 33%, 0%, 25%

Color Variations & Tints

  • #44A7E4

    Lightness: 58%

  • #2D9CE1

    Lightness: 53%

  • #1F90D6

    Lightness: 48%

  • #1B81C0

    Lightness: 43%

    Current color

  • #1872AA

    Lightness: 38%

  • #156393

    Lightness: 33%

  • #12547D

    Lightness: 28%

Accessibility

White Text
4.2
FAIL
Black Text
4.9
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 #1B81C0

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

Current: #1B81C0

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