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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
#6599DF
RGB Values
101, 153, 223
HSL Values
214°, 66%, 64%
CMYK Values
55%, 31%, 0%, 13%

Color Variations & Tints

  • #A6C5ED

    Lightness: 79%

  • #91B7E8

    Lightness: 74%

  • #7CA9E4

    Lightness: 69%

  • #6599DF

    Lightness: 64%

    Current color

  • #518DDB

    Lightness: 59%

  • #3C7FD7

    Lightness: 54%

  • #2A72CF

    Lightness: 49%

Accessibility

White Text
2.9
FAIL
Black Text
7.2
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 #6599DF

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

Current: #6599DF

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