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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
#51A6F6
RGB Values
81, 166, 246
HSL Values
209°, 90%, 64%
CMYK Values
67%, 33%, 0%, 4%

Color Variations & Tints

  • #99CBFA

    Lightness: 79%

  • #81BFF8

    Lightness: 74%

  • #69B2F7

    Lightness: 69%

  • #51A6F6

    Lightness: 64%

    Current color

  • #389AF5

    Lightness: 59%

  • #208DF3

    Lightness: 54%

  • #0C81ED

    Lightness: 49%

Accessibility

White Text
2.6
FAIL
Black Text
8.1
PASS
WCAG AA
PASS
WCAG AAA
PASS

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 #51A6F6

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

Current: #51A6F6

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