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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
#643DBB
RGB Values
100, 61, 187
HSL Values
259°, 51%, 49%
CMYK Values
47%, 67%, 0%, 27%

Color Variations & Tints

  • #9274D2

    Lightness: 64%

  • #8361CC

    Lightness: 59%

  • #744EC6

    Lightness: 54%

  • #643DBB

    Lightness: 49%

    Current color

  • #5B37A9

    Lightness: 44%

  • #513196

    Lightness: 39%

  • #462A83

    Lightness: 34%

Accessibility

White Text
7.2
PASS
Black Text
2.9
FAIL
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 #643DBB

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

Current: #643DBB

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