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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
#637B83
RGB Values
99, 123, 131
HSL Values
195°, 14%, 45%
CMYK Values
24%, 6%, 0%, 49%

Color Variations & Tints

  • #8BA0A7

    Lightness: 60%

  • #7C949C

    Lightness: 55%

  • #6E8891

    Lightness: 50%

  • #637B83

    Lightness: 45%

    Current color

  • #586D74

    Lightness: 40%

  • #4D5F66

    Lightness: 35%

  • #425257

    Lightness: 30%

Accessibility

White Text
4.5
FAIL
Black Text
4.7
PASS
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 #637B83

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

Current: #637B83

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