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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
#391C9D
RGB Values
57, 28, 157
HSL Values
253°, 70%, 36%
CMYK Values
64%, 82%, 0%, 38%

Color Variations & Tints

  • #502BDA

    Lightness: 51%

  • #4723C7

    Lightness: 46%

  • #3F1FB2

    Lightness: 41%

  • #391C9D

    Lightness: 36%

    Current color

  • #301886

    Lightness: 31%

  • #281471

    Lightness: 26%

  • #20105B

    Lightness: 21%

Accessibility

White Text
11.5
PASS
Black Text
1.8
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 #391C9D

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

Current: #391C9D

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