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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
#151021
RGB Values
21, 16, 33
HSL Values
258°, 35%, 10%
CMYK Values
36%, 52%, 0%, 87%

Color Variations & Tints

  • #372956

    Lightness: 25%

  • #2C2145

    Lightness: 20%

  • #211934

    Lightness: 15%

  • #151021

    Lightness: 10%

    Current color

  • #0B0811

    Lightness: 5%

  • #000000

    Lightness: 0%

  • #000000

    Lightness: 0%

Accessibility

White Text
18.6
PASS
Black Text
1.1
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 #151021

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

Current: #151021

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