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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
#648B8B
RGB Values
100, 139, 139
HSL Values
180°, 16%, 47%
CMYK Values
28%, 0%, 0%, 45%

Color Variations & Tints

  • #8FAEAE

    Lightness: 62%

  • #80A3A3

    Lightness: 57%

  • #719898

    Lightness: 52%

  • #648B8B

    Lightness: 47%

    Current color

  • #5A7C7C

    Lightness: 42%

  • #4F6D6D

    Lightness: 37%

  • #455F5F

    Lightness: 32%

Accessibility

White Text
3.7
FAIL
Black Text
5.6
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 #648B8B

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

Current: #648B8B

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