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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
#252779
RGB Values
37, 39, 121
HSL Values
239°, 53%, 31%
CMYK Values
69%, 68%, 0%, 53%

Color Variations & Tints

  • #3739B3

    Lightness: 46%

  • #3133A0

    Lightness: 41%

  • #2B2D8C

    Lightness: 36%

  • #252779

    Lightness: 31%

    Current color

  • #1F2065

    Lightness: 26%

  • #191A52

    Lightness: 21%

  • #13143E

    Lightness: 16%

Accessibility

White Text
12.8
PASS
Black Text
1.6
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 #252779

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

Current: #252779

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