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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
#644DE3
RGB Values
100, 77, 227
HSL Values
249°, 73%, 60%
CMYK Values
56%, 66%, 0%, 11%

Color Variations & Tints

  • #9F91EE

    Lightness: 75%

  • #8B7BEA

    Lightness: 70%

  • #7865E7

    Lightness: 65%

  • #644DE3

    Lightness: 60%

    Current color

  • #5238E0

    Lightness: 55%

  • #3E22DD

    Lightness: 50%

  • #381FC7

    Lightness: 45%

Accessibility

White Text
5.7
PASS
Black Text
3.7
FAIL
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 #644DE3

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

Current: #644DE3

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