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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
#253543
RGB Values
37, 53, 67
HSL Values
208°, 29%, 20%
CMYK Values
45%, 21%, 0%, 74%

Color Variations & Tints

  • #3F5B73

    Lightness: 35%

  • #364E63

    Lightness: 30%

  • #2D4152

    Lightness: 25%

  • #253543

    Lightness: 20%

    Current color

  • #1B2731

    Lightness: 15%

  • #121A21

    Lightness: 10%

  • #090D10

    Lightness: 5%

Accessibility

White Text
12.6
PASS
Black Text
1.7
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 #253543

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

Current: #253543

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