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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
#646CDE
RGB Values
100, 108, 222
HSL Values
236°, 65%, 63%
CMYK Values
55%, 51%, 0%, 13%

Color Variations & Tints

  • #A2A7EB

    Lightness: 78%

  • #8D93E7

    Lightness: 73%

  • #787FE2

    Lightness: 68%

  • #646CDE

    Lightness: 63%

    Current color

  • #4E58DA

    Lightness: 58%

  • #3944D5

    Lightness: 53%

  • #2B35CA

    Lightness: 48%

Accessibility

White Text
4.4
FAIL
Black Text
4.7
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 #646CDE

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

Current: #646CDE

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