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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
#151D3D
RGB Values
21, 29, 61
HSL Values
228°, 49%, 16%
CMYK Values
66%, 52%, 0%, 76%

Color Variations & Tints

  • #283876

    Lightness: 31%

  • #222F63

    Lightness: 26%

  • #1B2650

    Lightness: 21%

  • #151D3D

    Lightness: 16%

    Current color

  • #0E142A

    Lightness: 11%

  • #080B17

    Lightness: 6%

  • #010204

    Lightness: 1%

Accessibility

White Text
16.5
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 #151D3D

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

Current: #151D3D

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