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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
#28008F
RGB Values
40, 0, 143
HSL Values
257°, 100%, 28%
CMYK Values
72%, 100%, 0%, 44%

Color Variations & Tints

  • #3E00DB

    Lightness: 43%

  • #3700C2

    Lightness: 38%

  • #3000A8

    Lightness: 33%

  • #28008F

    Lightness: 28%

    Current color

  • #210075

    Lightness: 23%

  • #1A005C

    Lightness: 18%

  • #130042

    Lightness: 13%

Accessibility

White Text
14.1
PASS
Black Text
1.5
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 #28008F

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

Current: #28008F

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