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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
#138CD0
RGB Values
19, 140, 208
HSL Values
202°, 83%, 45%
CMYK Values
91%, 33%, 0%, 18%

Color Variations & Tints

  • #44B0EE

    Lightness: 60%

  • #2DA6EB

    Lightness: 55%

  • #169CE9

    Lightness: 50%

  • #138CD0

    Lightness: 45%

    Current color

  • #117DBB

    Lightness: 40%

  • #0F6DA3

    Lightness: 35%

  • #0D5D8C

    Lightness: 30%

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 #138CD0

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

Current: #138CD0

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