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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
#427D75
RGB Values
66, 125, 117
HSL Values
172°, 31%, 37%
CMYK Values
47%, 0%, 6%, 51%

Color Variations & Tints

  • #5FABA0

    Lightness: 52%

  • #539D93

    Lightness: 47%

  • #4A8C83

    Lightness: 42%

  • #427D75

    Lightness: 37%

    Current color

  • #386B64

    Lightness: 32%

  • #305A55

    Lightness: 27%

  • #274945

    Lightness: 22%

Accessibility

White Text
4.7
PASS
Black Text
4.4
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 #427D75

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

Current: #427D75

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