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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
#D31718
RGB Values
211, 23, 24
HSL Values
360°, 80%, 46%
CMYK Values
0%, 89%, 89%, 17%

Color Variations & Tints

  • #EB4C4C

    Lightness: 61%

  • #E93535

    Lightness: 56%

  • #E61E1E

    Lightness: 51%

  • #D31718

    Lightness: 46%

    Current color

  • #BC1515

    Lightness: 41%

  • #A51212

    Lightness: 36%

  • #8E1010

    Lightness: 31%

Accessibility

White Text
5.4
PASS
Black Text
3.9
FAIL
WCAG AA
PASS
WCAG AAA
FAIL

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 #D31718

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

Current: #D31718

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