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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
#900C09
RGB Values
144, 12, 9
HSL Values
1°, 88%, 30%
CMYK Values
0%, 92%, 94%, 44%

Color Variations & Tints

  • #D8110E

    Lightness: 45%

  • #C00F0C

    Lightness: 40%

  • #A80D0B

    Lightness: 35%

  • #900C09

    Lightness: 30%

    Current color

  • #780A08

    Lightness: 25%

  • #600806

    Lightness: 20%

  • #480605

    Lightness: 15%

Accessibility

White Text
9.4
PASS
Black Text
2.2
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 #900C09

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

Current: #900C09

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