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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
#F01011
RGB Values
240, 16, 17
HSL Values
360°, 88%, 50%
CMYK Values
0%, 93%, 93%, 6%

Color Variations & Tints

  • #F45757

    Lightness: 65%

  • #F33F3F

    Lightness: 60%

  • #F12727

    Lightness: 55%

  • #F01011

    Lightness: 50%

    Current color

  • #D80E0E

    Lightness: 45%

  • #C00C0C

    Lightness: 40%

  • #A80B0B

    Lightness: 35%

Accessibility

White Text
4.4
FAIL
Black Text
4.8
PASS
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 #F01011

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

Current: #F01011

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