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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
#28668F
RGB Values
40, 102, 143
HSL Values
204°, 56%, 36%
CMYK Values
72%, 29%, 0%, 44%

Color Variations & Tints

  • #3C90C8

    Lightness: 51%

  • #3482B7

    Lightness: 46%

  • #2E74A3

    Lightness: 41%

  • #28668F

    Lightness: 36%

    Current color

  • #23587B

    Lightness: 31%

  • #1D4A67

    Lightness: 26%

  • #183C54

    Lightness: 21%

Accessibility

White Text
6.2
PASS
Black Text
3.4
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 #28668F

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

Current: #28668F

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