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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
#3F819D
RGB Values
63, 129, 157
HSL Values
198°, 43%, 43%
CMYK Values
60%, 18%, 0%, 38%

Color Variations & Tints

  • #66A6C2

    Lightness: 58%

  • #549CBB

    Lightness: 53%

  • #468FAF

    Lightness: 48%

  • #3F819D

    Lightness: 43%

    Current color

  • #37728B

    Lightness: 38%

  • #306378

    Lightness: 33%

  • #295466

    Lightness: 28%

Accessibility

White Text
4.3
FAIL
Black Text
4.8
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 #3F819D

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

Current: #3F819D

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