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Colorbook
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Color Information

Blue

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#280073
RGB Values
40, 0, 115
HSL Values
261°, 100%, 23%
CMYK Values
65%, 100%, 0%, 55%

Color Variations & Tints

  • #4400C2

    Lightness: 38%

  • #3B00A8

    Lightness: 33%

  • #32008F

    Lightness: 28%

  • #280073

    Lightness: 23%

    Current color

  • #20005C

    Lightness: 18%

  • #170042

    Lightness: 13%

  • #0E0029

    Lightness: 8%

Accessibility

White Text
15.7
PASS
Black Text
1.3
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 #280073

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

Current: #280073

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