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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
#640D07
RGB Values
100, 13, 7
HSL Values
4°, 87%, 21%
CMYK Values
0%, 87%, 93%, 61%

Color Variations & Tints

  • #AC170C

    Lightness: 36%

  • #94130A

    Lightness: 31%

  • #7C1009

    Lightness: 26%

  • #640D07

    Lightness: 21%

    Current color

  • #4C0A05

    Lightness: 16%

  • #340704

    Lightness: 11%

  • #1D0402

    Lightness: 6%

Accessibility

White Text
13.1
PASS
Black Text
1.6
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 #640D07

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

Current: #640D07

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