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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
#21491D
RGB Values
33, 73, 29
HSL Values
115°, 43%, 20%
CMYK Values
55%, 0%, 60%, 71%

Color Variations & Tints

  • #398033

    Lightness: 35%

  • #316D2C

    Lightness: 30%

  • #295B24

    Lightness: 25%

  • #21491D

    Lightness: 20%

    Current color

  • #193716

    Lightness: 15%

  • #10240F

    Lightness: 10%

  • #081207

    Lightness: 5%

Accessibility

White Text
10.3
PASS
Black Text
2.0
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 #21491D

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

Current: #21491D

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