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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
#3F7D7B
RGB Values
63, 125, 123
HSL Values
178°, 33%, 37%
CMYK Values
50%, 0%, 2%, 51%

Color Variations & Tints

  • #5CADAA

    Lightness: 52%

  • #509F9D

    Lightness: 47%

  • #488E8C

    Lightness: 42%

  • #3F7D7B

    Lightness: 37%

    Current color

  • #376D6B

    Lightness: 32%

  • #2E5C5A

    Lightness: 27%

  • #264B49

    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 #3F7D7B

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

Current: #3F7D7B

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