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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
#231D44
RGB Values
35, 29, 68
HSL Values
249°, 40%, 19%
CMYK Values
49%, 57%, 0%, 73%

Color Variations & Tints

  • #3E3479

    Lightness: 34%

  • #352C68

    Lightness: 29%

  • #2C2556

    Lightness: 24%

  • #231D44

    Lightness: 19%

    Current color

  • #1A1532

    Lightness: 14%

  • #110E20

    Lightness: 9%

  • #07060E

    Lightness: 4%

Accessibility

White Text
15.8
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 #231D44

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

Current: #231D44

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