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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
#42755B
RGB Values
66, 117, 91
HSL Values
149°, 28%, 36%
CMYK Values
44%, 0%, 22%, 54%

Color Variations & Tints

  • #5FA581

    Lightness: 51%

  • #549674

    Lightness: 46%

  • #4B8668

    Lightness: 41%

  • #42755B

    Lightness: 36%

    Current color

  • #39654E

    Lightness: 31%

  • #305542

    Lightness: 26%

  • #274535

    Lightness: 21%

Accessibility

White Text
5.3
PASS
Black Text
3.9
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 #42755B

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

Current: #42755B

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