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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
#421D28
RGB Values
66, 29, 40
HSL Values
342°, 39%, 19%
CMYK Values
0%, 56%, 39%, 74%

Color Variations & Tints

  • #793549

    Lightness: 34%

  • #672D3E

    Lightness: 29%

  • #552534

    Lightness: 24%

  • #421D28

    Lightness: 19%

    Current color

  • #32161E

    Lightness: 14%

  • #200E13

    Lightness: 9%

  • #0E0609

    Lightness: 4%

Accessibility

White Text
14.6
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 #421D28

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

Current: #421D28

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