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Colorbook
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Color Information

Red

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#902813
RGB Values
144, 40, 19
HSL Values
10°, 77%, 32%
CMYK Values
0%, 72%, 87%, 44%

Color Variations & Tints

  • #D43A1C

    Lightness: 47%

  • #BE3419

    Lightness: 42%

  • #A72E16

    Lightness: 37%

  • #902813

    Lightness: 32%

    Current color

  • #7A2210

    Lightness: 27%

  • #631B0D

    Lightness: 22%

  • #4D150A

    Lightness: 17%

Accessibility

White Text
8.4
PASS
Black Text
2.5
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 #902813

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

Current: #902813

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