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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
#21253B
RGB Values
33, 37, 59
HSL Values
231°, 28%, 18%
CMYK Values
44%, 37%, 0%, 77%

Color Variations & Tints

  • #3D446C

    Lightness: 33%

  • #33395B

    Lightness: 28%

  • #2A2F4B

    Lightness: 23%

  • #21253B

    Lightness: 18%

    Current color

  • #181B2A

    Lightness: 13%

  • #0F101A

    Lightness: 8%

  • #06060A

    Lightness: 3%

Accessibility

White Text
15.1
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 #21253B

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

Current: #21253B

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