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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
#66B8E6
RGB Values
102, 184, 230
HSL Values
202°, 72%, 65%
CMYK Values
56%, 20%, 0%, 10%

Color Variations & Tints

  • #A7D6F1

    Lightness: 80%

  • #91CBED

    Lightness: 75%

  • #7BC1EA

    Lightness: 70%

  • #66B8E6

    Lightness: 65%

    Current color

  • #50ADE2

    Lightness: 60%

  • #3AA2DF

    Lightness: 55%

  • #2498DB

    Lightness: 50%

Accessibility

White Text
2.2
FAIL
Black Text
9.6
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 #66B8E6

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

Current: #66B8E6

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