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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
#137EE7
RGB Values
19, 126, 231
HSL Values
210°, 85%, 49%
CMYK Values
92%, 45%, 0%, 9%

Color Variations & Tints

  • #55A3F1

    Lightness: 64%

  • #3E96EF

    Lightness: 59%

  • #268AED

    Lightness: 54%

  • #137EE7

    Lightness: 49%

    Current color

  • #1170D0

    Lightness: 44%

  • #0F63B8

    Lightness: 39%

  • #0D57A0

    Lightness: 34%

Accessibility

White Text
4.1
FAIL
Black Text
5.2
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 #137EE7

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

Current: #137EE7

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