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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
#181524
RGB Values
24, 21, 36
HSL Values
252°, 26%, 11%
CMYK Values
33%, 42%, 0%, 86%

Color Variations & Tints

  • #383154

    Lightness: 26%

  • #2D2843

    Lightness: 21%

  • #221E33

    Lightness: 16%

  • #181524

    Lightness: 11%

    Current color

  • #0D0B13

    Lightness: 6%

  • #020203

    Lightness: 1%

  • #000000

    Lightness: 0%

Accessibility

White Text
17.9
PASS
Black Text
1.2
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 #181524

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

Current: #181524

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