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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
#66ACEB
RGB Values
102, 172, 235
HSL Values
208°, 77%, 66%
CMYK Values
57%, 27%, 0%, 8%

Color Variations & Tints

  • #A9D1F4

    Lightness: 81%

  • #93C5F1

    Lightness: 76%

  • #7CB9EE

    Lightness: 71%

  • #66ACEB

    Lightness: 66%

    Current color

  • #4FA1E8

    Lightness: 61%

  • #3895E5

    Lightness: 56%

  • #2288E2

    Lightness: 51%

Accessibility

White Text
2.4
FAIL
Black Text
8.7
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 #66ACEB

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

Current: #66ACEB

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