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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
#666CEB
RGB Values
102, 108, 235
HSL Values
237°, 77%, 66%
CMYK Values
57%, 54%, 0%, 8%

Color Variations & Tints

  • #A9ADF4

    Lightness: 81%

  • #9397F1

    Lightness: 76%

  • #7C82EE

    Lightness: 71%

  • #666CEB

    Lightness: 66%

    Current color

  • #4F57E8

    Lightness: 61%

  • #3841E5

    Lightness: 56%

  • #222BE2

    Lightness: 51%

Accessibility

White Text
4.3
FAIL
Black Text
4.9
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 #666CEB

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

Current: #666CEB

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