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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
#666C28
RGB Values
102, 108, 40
HSL Values
65°, 46%, 29%
CMYK Values
6%, 0%, 63%, 58%

Color Variations & Tints

  • #9BA43D

    Lightness: 44%

  • #8A9136

    Lightness: 39%

  • #787F2F

    Lightness: 34%

  • #666C28

    Lightness: 29%

    Current color

  • #555921

    Lightness: 24%

  • #43471A

    Lightness: 19%

  • #313413

    Lightness: 14%

Accessibility

White Text
5.6
PASS
Black Text
3.7
FAIL
WCAG AA
PASS
WCAG AAA
FAIL

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 #666C28

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

Current: #666C28

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