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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
#990101
RGB Values
153, 1, 1
HSL Values
0°, 99%, 30%
CMYK Values
0%, 99%, 99%, 40%

Color Variations & Tints

  • #E40101

    Lightness: 45%

  • #CB0101

    Lightness: 40%

  • #B20101

    Lightness: 35%

  • #990101

    Lightness: 30%

    Current color

  • #7F0101

    Lightness: 25%

  • #650101

    Lightness: 20%

  • #4C0000

    Lightness: 15%

Accessibility

White Text
8.9
PASS
Black Text
2.4
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 #990101

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

Current: #990101

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