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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
#2A8BCB
RGB Values
42, 139, 203
HSL Values
204°, 66%, 48%
CMYK Values
79%, 32%, 0%, 20%

Color Variations & Tints

  • #62ADDF

    Lightness: 63%

  • #4DA2DB

    Lightness: 58%

  • #3897D6

    Lightness: 53%

  • #2A8BCB

    Lightness: 48%

    Current color

  • #257CB6

    Lightness: 43%

  • #216EA1

    Lightness: 38%

  • #1D5F8C

    Lightness: 33%

Accessibility

White Text
3.7
FAIL
Black Text
5.7
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 #2A8BCB

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

Current: #2A8BCB

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