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Colorbook
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Color Information

Black

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#151F3B
RGB Values
21, 31, 59
HSL Values
224°, 48%, 16%
CMYK Values
64%, 47%, 0%, 77%

Color Variations & Tints

  • #293D75

    Lightness: 31%

  • #223362

    Lightness: 26%

  • #1C2A4F

    Lightness: 21%

  • #151F3B

    Lightness: 16%

    Current color

  • #0F162A

    Lightness: 11%

  • #080C17

    Lightness: 6%

  • #010204

    Lightness: 1%

Accessibility

White Text
16.3
PASS
Black Text
1.3
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 #151F3B

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

Current: #151F3B

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