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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
#66818F
RGB Values
102, 129, 143
HSL Values
200°, 17%, 48%
CMYK Values
29%, 10%, 0%, 44%

Color Variations & Tints

  • #91A6B1

    Lightness: 63%

  • #829AA6

    Lightness: 58%

  • #738E9C

    Lightness: 53%

  • #66818F

    Lightness: 48%

    Current color

  • #5B7480

    Lightness: 43%

  • #506671

    Lightness: 38%

  • #465962

    Lightness: 33%

Accessibility

White Text
4.1
FAIL
Black Text
5.1
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 #66818F

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

Current: #66818F

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