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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
#421A1B
RGB Values
66, 26, 27
HSL Values
359°, 43%, 18%
CMYK Values
0%, 61%, 59%, 74%

Color Variations & Tints

  • #783031

    Lightness: 33%

  • #66292A

    Lightness: 28%

  • #542122

    Lightness: 23%

  • #421A1B

    Lightness: 18%

    Current color

  • #2F1313

    Lightness: 13%

  • #1D0C0C

    Lightness: 8%

  • #0B0404

    Lightness: 3%

Accessibility

White Text
15.1
PASS
Black Text
1.4
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 #421A1B

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

Current: #421A1B

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