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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
#FD1808
RGB Values
253, 24, 8
HSL Values
4°, 98%, 51%
CMYK Values
0%, 91%, 97%, 1%

Color Variations & Tints

  • #FD5F53

    Lightness: 66%

  • #FD473A

    Lightness: 61%

  • #FD3021

    Lightness: 56%

  • #FD1808

    Lightness: 51%

    Current color

  • #E81202

    Lightness: 46%

  • #CF1002

    Lightness: 41%

  • #B60E02

    Lightness: 36%

Accessibility

White Text
4.0
FAIL
Black Text
5.3
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 #FD1808

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

Current: #FD1808

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