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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
#171538
RGB Values
23, 21, 56
HSL Values
243°, 45%, 15%
CMYK Values
59%, 63%, 0%, 78%

Color Variations & Tints

  • #2E2A6F

    Lightness: 30%

  • #26235C

    Lightness: 25%

  • #1E1C4A

    Lightness: 20%

  • #171538

    Lightness: 15%

    Current color

  • #0F0E25

    Lightness: 10%

  • #080712

    Lightness: 5%

  • #000000

    Lightness: 0%

Accessibility

White Text
17.5
PASS
Black Text
1.2
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 #171538

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

Current: #171538

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