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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
#2B87CF
RGB Values
43, 135, 207
HSL Values
206°, 66%, 49%
CMYK Values
79%, 35%, 0%, 19%

Color Variations & Tints

  • #67ABE0

    Lightness: 64%

  • #51A0DB

    Lightness: 59%

  • #3C94D7

    Lightness: 54%

  • #2B87CF

    Lightness: 49%

    Current color

  • #267ABA

    Lightness: 44%

  • #226CA5

    Lightness: 39%

  • #1D5E90

    Lightness: 34%

Accessibility

White Text
3.8
FAIL
Black Text
5.5
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 #2B87CF

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

Current: #2B87CF

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