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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
#3F644E
RGB Values
63, 100, 78
HSL Values
144°, 23%, 32%
CMYK Values
37%, 0%, 22%, 61%

Color Variations & Tints

  • #5C9372

    Lightness: 47%

  • #528466

    Lightness: 42%

  • #49745A

    Lightness: 37%

  • #3F644E

    Lightness: 32%

    Current color

  • #355542

    Lightness: 27%

  • #2B4536

    Lightness: 22%

  • #213529

    Lightness: 17%

Accessibility

White Text
6.7
PASS
Black Text
3.1
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 #3F644E

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

Current: #3F644E

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