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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
#287BAB
RGB Values
40, 123, 171
HSL Values
202°, 62%, 41%
CMYK Values
77%, 28%, 0%, 33%

Color Variations & Tints

  • #49A1D4

    Lightness: 56%

  • #3597D0

    Lightness: 51%

  • #2D89BE

    Lightness: 46%

  • #287BAB

    Lightness: 41%

    Current color

  • #236B95

    Lightness: 36%

  • #1E5C80

    Lightness: 31%

  • #194D6B

    Lightness: 26%

Accessibility

White Text
4.7
PASS
Black Text
4.5
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 #287BAB

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

Current: #287BAB

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