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Colorbook
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Color Information

Gray

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#3F4F47
RGB Values
63, 79, 71
HSL Values
150°, 11%, 28%
CMYK Values
20%, 0%, 10%, 69%

Color Variations & Tints

  • #627A6E

    Lightness: 43%

  • #566C61

    Lightness: 38%

  • #4B5D54

    Lightness: 33%

  • #3F4F47

    Lightness: 28%

    Current color

  • #34413B

    Lightness: 23%

  • #29332E

    Lightness: 18%

  • #1E2521

    Lightness: 13%

Accessibility

White Text
8.7
PASS
Black Text
2.4
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 #3F4F47

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

Current: #3F4F47

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