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Colorbook
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Color Information

Black

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#001B66
RGB Values
0, 27, 102
HSL Values
224°, 100%, 20%
CMYK Values
100%, 74%, 0%, 60%

Color Variations & Tints

  • #0030B3

    Lightness: 35%

  • #002999

    Lightness: 30%

  • #002280

    Lightness: 25%

  • #001B66

    Lightness: 20%

    Current color

  • #00144D

    Lightness: 15%

  • #000E33

    Lightness: 10%

  • #00071A

    Lightness: 5%

Accessibility

White Text
15.6
PASS
Black Text
1.3
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 #001B66

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

Current: #001B66

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