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Colorbook
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Color Information

Blue

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#399CD6
RGB Values
57, 156, 214
HSL Values
202°, 66%, 53%
CMYK Values
73%, 27%, 0%, 16%

Color Variations & Tints

  • #78BCE3

    Lightness: 68%

  • #62B1DF

    Lightness: 63%

  • #4DA7DB

    Lightness: 58%

  • #399CD6

    Lightness: 53%

    Current color

  • #2A90CB

    Lightness: 48%

  • #2581B6

    Lightness: 43%

  • #2172A1

    Lightness: 38%

Accessibility

White Text
3.0
FAIL
Black Text
6.9
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 #399CD6

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

Current: #399CD6

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