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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
#152970
RGB Values
21, 41, 112
HSL Values
227°, 68%, 26%
CMYK Values
81%, 63%, 0%, 56%

Color Variations & Tints

  • #2140B0

    Lightness: 41%

  • #1D389A

    Lightness: 36%

  • #193185

    Lightness: 31%

  • #152970

    Lightness: 26%

    Current color

  • #11215A

    Lightness: 21%

  • #0D1945

    Lightness: 16%

  • #09112F

    Lightness: 11%

Accessibility

White Text
13.3
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 #152970

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

Current: #152970

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