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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
#21223F
RGB Values
33, 34, 63
HSL Values
238°, 31%, 19%
CMYK Values
48%, 46%, 0%, 75%

Color Variations & Tints

  • #3C3E72

    Lightness: 34%

  • #333561

    Lightness: 29%

  • #2A2B50

    Lightness: 24%

  • #21223F

    Lightness: 19%

    Current color

  • #19192F

    Lightness: 14%

  • #10101E

    Lightness: 9%

  • #07070D

    Lightness: 4%

Accessibility

White Text
15.4
PASS
Black Text
1.4
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 #21223F

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

Current: #21223F

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