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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
#247CDB
RGB Values
36, 124, 219
HSL Values
211°, 72%, 50%
CMYK Values
84%, 43%, 0%, 14%

Color Variations & Tints

  • #65A4E6

    Lightness: 65%

  • #5097E2

    Lightness: 60%

  • #3A89DF

    Lightness: 55%

  • #247CDB

    Lightness: 50%

    Current color

  • #2070C5

    Lightness: 45%

  • #1D64AF

    Lightness: 40%

  • #19579A

    Lightness: 35%

Accessibility

White Text
4.2
FAIL
Black Text
5.0
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 #247CDB

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

Current: #247CDB

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