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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
#518DDF
RGB Values
81, 141, 223
HSL Values
215°, 69%, 60%
CMYK Values
64%, 37%, 0%, 13%

Color Variations & Tints

  • #93B8EB

    Lightness: 75%

  • #7EAAE7

    Lightness: 70%

  • #689BE3

    Lightness: 65%

  • #518DDF

    Lightness: 60%

    Current color

  • #3D7FDB

    Lightness: 55%

  • #2871D7

    Lightness: 50%

  • #2466C2

    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 #518DDF

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

Current: #518DDF

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