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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
#3780F3
RGB Values
55, 128, 243
HSL Values
217°, 89%, 58%
CMYK Values
77%, 47%, 0%, 5%

Color Variations & Tints

  • #7DACF7

    Lightness: 73%

  • #659CF6

    Lightness: 68%

  • #4D8DF5

    Lightness: 63%

  • #3780F3

    Lightness: 58%

    Current color

  • #1C6EF2

    Lightness: 53%

  • #0D61E7

    Lightness: 48%

  • #0C57CF

    Lightness: 43%

Accessibility

White Text
3.8
FAIL
Black Text
5.5
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 #3780F3

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

Current: #3780F3

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