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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
#378BFA
RGB Values
55, 139, 250
HSL Values
214°, 95%, 60%
CMYK Values
78%, 44%, 0%, 2%

Color Variations & Tints

  • #83B7FC

    Lightness: 75%

  • #6AA9FB

    Lightness: 70%

  • #519AFB

    Lightness: 65%

  • #378BFA

    Lightness: 60%

    Current color

  • #1F7EF9

    Lightness: 55%

  • #066FF9

    Lightness: 50%

  • #0664E0

    Lightness: 45%

Accessibility

White Text
3.4
FAIL
Black Text
6.2
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 #378BFA

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

Current: #378BFA

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