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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
#3F6464
RGB Values
63, 100, 100
HSL Values
180°, 23%, 32%
CMYK Values
37%, 0%, 0%, 61%

Color Variations & Tints

  • #5C9393

    Lightness: 47%

  • #528484

    Lightness: 42%

  • #497474

    Lightness: 37%

  • #3F6464

    Lightness: 32%

    Current color

  • #355555

    Lightness: 27%

  • #2B4545

    Lightness: 22%

  • #213535

    Lightness: 17%

Accessibility

White Text
6.5
PASS
Black Text
3.2
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 #3F6464

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

Current: #3F6464

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