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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
#CB370B
RGB Values
203, 55, 11
HSL Values
14°, 90%, 42%
CMYK Values
0%, 73%, 95%, 20%

Color Variations & Tints

  • #F45D2F

    Lightness: 57%

  • #F34A16

    Lightness: 52%

  • #E43E0C

    Lightness: 47%

  • #CB370B

    Lightness: 42%

    Current color

  • #B33109

    Lightness: 37%

  • #9B2A08

    Lightness: 32%

  • #832407

    Lightness: 27%

Accessibility

White Text
5.1
PASS
Black Text
4.1
FAIL
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 #CB370B

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

Current: #CB370B

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